This is the accessible text file for GAO report number GAO-03-344 
entitled 'Aviation Security: Vulnerabilities and Potential 
Improvements for the Air Cargo System' which was released on January 
15, 2003.



This text file was formatted by the U.S. General Accounting Office 

(GAO) to be accessible to users with visual impairments, as part of a 

longer term project to improve GAO products’ accessibility. Every 

attempt has been made to maintain the structural and data integrity of 

the original printed product. Accessibility features, such as text 

descriptions of tables, consecutively numbered footnotes placed at the 

end of the file, and the text of agency comment letters, are provided 

but may not exactly duplicate the presentation or format of the printed 

version. The portable document format (PDF) file is an exact electronic 

replica of the printed version. We welcome your feedback. Please E-mail 

your comments regarding the contents or accessibility features of this 

document to Webmaster@gao.gov.



Report to Congressional Requesters:



United States General Accounting Office:



GAO:



December 2002:

AVIATION SECURITY:



Vulnerabilities and Potential Improvements for the Air Cargo System:



Air Cargo Vulnerabilities and Improvements:



GAO-03-344:



GAO Highlights:



Highlights of GAO-03-344, a report to the Ranking Minority Member, 

Aviation Subcommittee, Senate Committee on Commerce, Science, and 

Transportation; and another requester.



AVIATION SECURITY

Vulnerabilities and Potential Improvements for the Air Cargo System.



Why GAO Did This Study:



U.S. air carriers transport billions of tons of cargo each year in both 

passenger planes and all-cargo planes. Typically, about one-half of the 
hull 

of each passenger aircraft is filled with cargo. As a result, any 

vulnerabilities in the air cargo security system potentially threaten 
the 

entire air transport system. GAO agreed to determine the security 

vulnerabilities that have been identified in the air cargo system, the 
status 

of key recommendations that have been made since 1990 to improve air 
cargo 

security, and ways in which air cargo security can be improved in the 
near- 

and long-term.



What GAO Found:



Numerous government and industry studies have identified 
vulnerabilities 

in 

the air cargo system. These vulnerabilities occur in the security 

procedures 

of some air carriers and freight forwarders and in possible tampering 

with 

freight at various handoffs that occur from the point when cargo 

leaves a 

shipper to the point when it is loaded onto an aircraft. As a result, 

any 

weaknesses in this program could create security risks. FAA or the 

Transportation Security Administration (TSA), which now has 

responsibility 

for ensuring air cargo security, has implemented a number of key 

recommendations 

and mandates to improve air cargo security made since 1990 by 

numerous government 

organizations. For example, FAA and the air cargo industry developed 

security 

training guides for air carriers and ground personnel who handle air 

cargo. 

However, a few recommendations by those groups, such as conducting 

research and 

operational tests of technology to screen cargo for explosives, are 

ongoing and 

not yet completed by TSA, or have not been implemented. Federal 

reports, industry 

groups, and security experts have identified operational and 

technological measures 

that have the potential to improve air cargo security in the near-

term. Examples 

of the measures include checking the identity of individuals making 

cargo deliveries 

and implementing a computerized cargo profiling system. In addition, 

long-term 

improvements, such as developing a comprehensive cargo-security 

plan, have been 

recommended by the above sources, but not implemented by TSA.  

Each potential 

improvement measure, however, needs to be weighed against other 

issues, such as 

costs and the effects on the flow of cargo. Without a comprehensive 

plan that 

incorporates a risk management approach and sets deadlines and 

performance targets, 

TSA and other federal decisionmakers cannot know whether resources 

are being 

deployed as effectively and efficiently as possible in implementing 

measures to 

reduce the risk and mitigate the consequences of a terrorist 

attack.



Cargo Being Loaded on an Airplane:



[See PDF for Image]

[End of Figure]



What GAO Recommends:



GAO recommends that TSA develop a comprehensive plan for air 

cargo security that 

identifies priority actions on the basis of risk, costs, and 

performance targets, 

and establishes deadlines for completing those actions.



To view the full report, including the scope and methodology, 

click on the link above.

For more information, contact Gerald Dillingham, Ph.D., at 

(202) 512-2834 or 

dillinghamg@gao.gov.



Contents:



Letter:



Results in Brief:



Background:



Vulnerabilities Exist in Air Cargo Security:



Progress Has Been Made in Implementing Key Recommendations on Air Cargo 

Security:



Near-Term Actions to Enhance Cargo Security Have Been Identified:



A Comprehensive Plan and Risk Management Approach Have Been Identified 

As Ways to Improve Air Cargo Security in the Long Term:



Conclusion:



Recommendation for Executive Action:



Agency Comments:



Appendix I: Air Cargo Incidents and Follow-Up Actions:



Appendix II: Proposed Legislation on Air Cargo Security:



Appendix III: Key Recommendations on Air Cargo Security:



Tables:



Table 1: Information on Technologies to Enhance Air Cargo Security:



Table 2: Information on Operational Practices to Enhance Air Cargo 

Security:



Table 3: Status of Key Recommendations on Air Cargo Security:



Figures:



Figure 1: Flow of Cargo from Shipper to Air Carrier:



Figure 2: Amount of Air Cargo Transported (Actual and Projected) on 

Passenger and Cargo Planes in the United States, 1996-2012:



Figure 3: Amount of U.S. Mail Transported (Actual and Projected) on 

Passenger and Cargo Planes in the United States, 1996-2012:



Figure 4: Summary Information on the Status of Key Recommendations for 

Air Cargo Security:



Figure 5: Elements of a Risk Management Approach:



Figure 6: Time Line of Key Changes in Air Cargo Security:



Abbreviations:



DOT Department of Transportation

FAA Federal Aviation Administration

OIG Office of Inspector General

TSA Transportation Security Administration:



United States General Accounting Office:



Washington, DC 20548:



December 20, 2002:



The Honorable Kay Bailey Hutchison

Ranking Minority Member

Aviation Subcommittee

Committee on Commerce, Science, and Transportation

United States Senate:



The Honorable Dianne Feinstein

United States Senate:



U.S. air carriers transport billions of tons of cargo each year in both 

passenger planes and all-cargo planes. Keeping that cargo secure is the 

responsibility of the Department of Transportation’s (DOT) 

Transportation Security Administration (TSA), which was created in 

November 2001 by the Aviation and Transportation Security Act. Prior to 

that date, the Federal Aviation Administration (FAA) had this 

responsibility. To ensure air cargo security, the act requires the 

screening of all cargo carried aboard commercial passenger aircraft and 

requires TSA to have a system in place as soon as practicable to screen 

or otherwise ensure the security of cargo on all-cargo aircraft. To 

date, TSA has focused much effort and funding on ensuring that bombs 

and other threat items are not carried onto planes by passengers or in 

their carry-on or checked luggage. However, about one-half of the hull 

of each passenger aircraft is typically filled with cargo. If 

vulnerabilities exist in the transport of air cargo, they potentially 

threaten the air transport system. You asked us to examine the security 

of air cargo. In doing so, we addressed the following research 

questions:



* What security vulnerabilities have been identified in the air cargo 

system?



* What is the status of key recommendations that have been made within 

the past 12 years to improve air cargo security?



* How can air cargo security be improved in the near-and long-term?



To answer our research questions, we conducted a comprehensive 

assessment of pertinent literature, including reports from TSA, FAA, 

DOT’s Volpe Transportation Center, the U.S. Customs Service, federal 

commissions and working groups, aviation industry groups, and DOT’s 

Office of Inspector General (OIG). We also interviewed TSA officials, 

industry officials representing passenger and cargo airlines and 

consolidators of air freight, and aviation security experts. In 

addition, to determine possible ways in which the security of air cargo 

can be improved in the long-term, we reviewed our previous reports on 

risk management techniques and compared the risk management approach 

outlined in those reports with TSA’s current procedures and plans for 

air cargo security. We performed our work from August to December 2002 

in accordance with generally accepted government auditing standards.



Results in Brief:



Vulnerabilities in the air cargo system have been identified by 

numerous government and industry studies. TSA inspectors have 

identified vulnerabilities in the security procedures of some air 

carriers and freight forwarders. Further vulnerabilities have been 

identified by the aviation industry and government agencies, including 

possible tampering with freight at various handoffs that occur from the 

point when it leaves a shipper to the point when it is loaded onto an 

aircraft and the adequacy of background investigations for all persons 

handling cargo. In addition, the “known shipper” program, TSA’s primary 

approach for ensuring air cargo security and complying with the cargo-

screening requirements of the Aviation and Transportation Security Act, 

has been reviewed by DOT’s Inspector General for possible security 

weaknesses.



FAA or TSA has implemented a number of the key recommendations and 

mandates to improve air cargo security made since 1990 by the Aviation 

Security Improvement Act of 1990, the White House Commission on 

Aviation Safety and Security (also called the Gore Commission), the 

Cargo Working Group (an FAA-industry partnership), and DOT’s Office of 

Inspector General. For example, in 1999, FAA, in cooperation with the 

air cargo industry, developed security training guides for air carriers 

and ground personnel who handle air cargo. However, a few 

recommendations made by those groups, such as conducting research and 

operational tests of technology to screen cargo for explosives, are 

either ongoing and not yet completed by TSA or have not been 

implemented.



Federal reports, industry groups, and security experts have identified 

operational and technological measures that have the potential to 

improve air cargo security in the near-term. The measures incorporate 

some of the key recommendations made since 1990, as well as best 

practices for cargo security identified in government reports. Examples 

of the measures include checking the identity of individuals making 

cargo deliveries and implementing a computerized cargo profiling 

system. Each potential improvement, however, needs to be weighed 

against other issues, such as costs and the effects on the flow of 

cargo. TSA has been developing some of these measures, such as 

conducting research on blast-hardened cargo containers; however, other 

potential measures have not been fully implemented. In addition, long-

term improvements, such as developing a comprehensive cargo security 

plan, have been recommended by the above sources but have not been 

implemented by TSA. Moreover, we have recommended that the federal 

government adopt a risk management approach to combat terrorism. 

Although TSA has undertaken two elements of the approach we describe--

it has assessed some of the threats and vulnerabilities of air cargo--

it has not undertaken a third element--assessing the criticality of 

deploying resources to address the vulnerabilities. Criticality is 

assessed by evaluating and prioritizing actions in terms of specific 

criteria. Without a comprehensive plan that incorporates a risk 

management approach, TSA and other federal decisionmakers cannot know 

whether resources are being deployed as effectively and efficiently as 

possible to reduce the risk and mitigate the consequences of a 

terrorist attack. This report recommends that the Under Secretary of 

Transportation for Security develop a comprehensive plan for air cargo 

security that incorporates a risk management approach, includes a list 

of security priorities, and sets deadlines for completing the actions. 

DOT agreed with our report and stated that TSA will consider 

implementing our recommendation as the agency moves forward with its 

cargo-security program.



Background:



Transporting cargo by air involves many participants, including 

manufacturers and shippers who make routine or occasional shipments, 

freight forwarders who consolidate shipments and deliver them to air 

carriers, and cargo facilities of passenger and all-cargo air carriers 

that store cargo until it is placed aboard an aircraft. Figure 1 

depicts these participants and the two primary ways in which a shipper 

can send cargo by air.



Figure 1: Flow of Cargo from Shipper to Air Carrier:



[See PDF for Image]

[End of Figure]



A shipper may take its packages to a freight forwarder, which 

consolidates cargo from many shippers and delivers it to air carriers, 

as illustrated in the top portion of figure 1. The freight forwarder 

usually has cargo facilities in or near airports and uses trucks to 

deliver bulk freight to commercial air carriers--either to a cargo 

facility or to a small-package receiving area at the ticket counter. 

Freight forwarders operate about 10,000 facilities nationwide. 

According to TSA, about 80 percent of shippers use freight forwarders. 

Another way for a shipper to send freight is to directly package and 

deliver it to an air carrier’s airport sorting center, as pictured in 

the bottom half of figure 1. Many large companies, including some that 

produce and distribute perishable goods, have direct accounts with 

either all-cargo or passenger air carriers.



During fiscal year 2000, about 12.2 billion revenue ton miles of 

freight were shipped in the United States by air.[Footnote 1] About 22 

percent of that total was carried on passenger aircraft; the remainder 

was carried on all-cargo aircraft.[Footnote 2] Freight is a significant 

source of income to airlines, accounting for about 10 percent of 

scheduled passenger airlines’ revenue and bringing in about $13 billion 

in 2001. DOT’s projections indicate, moreover, that the amount of 

freight transported by air will increase faster than the number of 

passengers in the coming years, thus adding to its importance.[Footnote 

3] Figure 2 shows the amount of air cargo actually transported from 

fiscal years 1996 through 2001 and the amount that DOT projects will be 

transported from fiscal years 2002 through 2012.



Figure 2: Amount of Air Cargo Transported (Actual and Projected) on 

Passenger and Cargo Planes in the United States, 1996-2012:



Notes: DOT’s data show actual amounts of cargo for fiscal years 1996 

through 2001 and projected amounts for fiscal years 2002 through 2013. 

Our analysis includes only the even-numbered years.



[See PDF for Image]



[A] A revenue ton mile (RTM) equates to one ton of mail transported one 

mile.



[End of Figure]



In addition to freight, air carriers also transport mail. In fiscal 

year 2000, about 2.5 billion revenue ton miles of mail were shipped in 

the United States by air and transported predominantly on passenger 

aircraft (about 70 percent of the total). In September 2001, the amount 

of domestic mail transported by air decreased significantly--down about 

68 percent from the revenue ton miles of mail transported in September 

2000. DOT’s forecast through 2013 indicates that the amount of domestic 

mail will resume growth in fiscal year 2004. However, the amount of 

mail transported by air is not expected to return to 2001 levels during 

the entire forecast period, in part because of security directives 

issued by TSA in the aftermath of the September 11th attacks. Figure 3 

shows the amount of U.S. mail actually transported by air from fiscal 

years 1996 through 2001 and the amount that DOT projects will be 

transported from fiscal years 2002 through 2012.



Figure 3: Amount of U.S. Mail Transported (Actual and Projected) on 

Passenger and Cargo Planes in the United States, 1996-2012:



Notes: DOT’s data show actual amounts of mail for fiscal years 1996 

through 2001 and projected amounts for fiscal years 2002 through 2013. 

Our analysis includes only the even-numbered years.



[See PDF for Image]



[A] A revenue ton mile (RTM) equates to one ton of mail transported one 

mile.



[End of Figure]



The December 1988 bombing of Pan Am flight 103, along with the crashes 

in 1996 of ValuJet flight 592 and TWA flight 800, led to increased 

national concerns about air cargo security. The federal government 

responded to these incidents with studies of the vulnerabilities in the 

civil aviation system and recommendations to enhance many aspects of 

the system, including air cargo security. (See app. I for a chronology 

of the incidents and the federal response.) For example, the Pan Am 

bombing led to the passage of the Aviation Security Improvement Act of 

1990, which required FAA to begin an accelerated 18-month research and 

development effort to find an effective explosives detection system to 

screen baggage and cargo. Following the 1996 crashes, the White House 

Commission on Aviation Safety and Security (known as the Gore 

Commission) was created. The Commission recommended, among other 

things, that FAA implement a comprehensive plan to address the threat 

of explosives and other threat objects in cargo and work with industry 

to develop new initiatives in this area. After the 1996 crashes, FAA 

established the Baseline Working Group and, later, the Cargo Working 

Group--federal-industry partnerships--to find ways to enhance air cargo 

security.



The terrorist attacks of September 11, 2001, renewed national concern 

with cargo security. The Aviation and Transportation Security Act, 

enacted in November 2001, requires the screening of all passengers and 

property, including cargo, U.S. mail, and carry-on and checked baggage, 

that is carried aboard commercial passenger aircraft. It also requires 

having a system in place as soon as practicable to screen, inspect, or 

otherwise ensure the security of cargo on all-cargo aircraft. The act 

transferred responsibility for aviation security from FAA to the newly 

established TSA. In November 2002, the Senate passed proposed 

legislation on air cargo security.



Vulnerabilities Exist in Air Cargo Security:



Vulnerabilities have been identified in the air cargo system by the 

1996 Gore Commission, DOT’s OIG, TSA, experts with whom we spoke, and 

other government and industry studies. Specifically, vulnerabilities 

have been identified in the security procedures of some air carriers 

and freight forwarders, including the adequacy of background 

investigations for all persons handling cargo. For example, TSA 

inspectors have found numerous security violations made by freight 

forwarders and air carriers during routine inspections of their 

facilities. Freight forwarders and air carriers are required to have 

TSA-approved cargo-security programs, and only freight forwarders with 

an approved security program are permitted to ship freight on passenger 

aircraft. In addition, DOT’s OIG has reviewed TSA’s known shipper 

program--which allows shippers that have established business histories 

with air carriers or freight forwarders to ship cargo on planes--and 

TSA’s procedures for approving freight forwarders, checking for 

possible security weaknesses. The known shipper program is TSA’s 

primary approach for ensuring air cargo security and complying with the 

cargo-screening requirements of the Aviation and Transportation 

Security Act.



Other security vulnerabilities include possible tampering with cargo 

during land transport to the airport or at the cargo-handling 

facilities of air carriers and freight forwarders. The amount of cargo 

theft that occurs in these locations indicates the security problem. 

The National Cargo Security Council, a coalition of public and private 

transportation organizations, estimates that cargo theft among all 

modes of transportation accounts for more than $10 billion in 

merchandise losses each year. Furthermore, the Federal Bureau of 

Investigation estimates that the majority of cargo theft in the United 

States occurs in cargo terminals, transfer facilities, and cargo-

consolidation areas. This type of theft also occurs in other parts of 

the world. For example, during a series of robberies that took place at 

the Brussels airport in 2001, robbers stole $160 million in diamonds 

from the holds of Lufthansa jets. DOT has reported that thefts are 

often committed by employees or with employee cooperation, and provided 

examples of thefts perpetrated at the Port of New York/New Jersey 

(which includes Kennedy International Airport) and the Port of Boston 

(which includes Logan International Airport).



Progress Has Been Made in Implementing Key Recommendations on Air Cargo 

Security:



FAA or TSA has implemented a number of key recommendations or mandates 

to improve air cargo security made over the past 12 years by the 

Aviation Security Improvement Act of 1990, the Gore Commission, the 

Cargo Working Group, and DOT’s OIG. (See fig. 4.) For example, in 1999, 

FAA, in cooperation with the air cargo industry, developed security 

training guides for air carriers and ground personnel who handle air 

cargo. However, other recommendations by those groups, such as 

conducting research and operational tests of technology to screen cargo 

for explosives, are ongoing and not yet completed by TSA or have not 

been implemented. According to TSA officials, in 1999 FAA requested 

funds to conduct a feasibility study on a system of third-party 

inspections, but the study was not funded by the Congress. Additional 

information on the key recommendations is provided in appendix III and 

in the subsequent section of this report.



Figure 4: Summary Information on the Status of Key Recommendations for 

Air Cargo Security:



[See PDF for Image]

[End of Figure]



Near-Term Actions to Enhance Cargo Security Have Been Identified:



Our research identified numerous actions that would enhance air cargo 

security in the near-term. These actions include and expand upon some 

of the key recommendations made since 1990, as well as best practices 

identified for cargo security in government reports. These actions 

include using existing technologies, such as explosives detection 

devices, which are currently used to screen baggage, and conducting 

further research and development of new technologies, such as blast-

hardened cargo containers, that have the potential to improve air cargo 

security. These actions also include instituting additional security 

procedures and best practices, such as developing an industrywide cargo 

profiling system and conducting background checks on all individuals 

who convey and handle air cargo.



Technologies to Enhance Air Cargo Security:



Our research identified a number of technologies, such as electronic 

seals,[Footnote 4] that have the potential to strengthen air cargo 

security by making it more difficult for freight to be tampered with 

during transport by truck from the shipper to the aircraft and in 

cargo-handling facilities. Other technologies, such as x-ray machines 

and explosives detection equipment, could be used to screen cargo 

before it is loaded on aircraft. While each technology has security-

enhancing benefits, each one also has potential limitations to 

implementation that need to be weighed. Table 1 describes these 

technologies as well as the potential cost, benefits, and drawbacks 

associated with each. Some of the technologies are discussed in greater 

detail after the table.



Table 1: Information on Technologies to Enhance Air Cargo Security:



Type of technology: Technology to screen for threat objects; 

Description: Technologies that are capable of detecting explosives and 

weapons of mass destruction, including radiological, chemical, and 

biological agents. They include:; * gamma-ray; * pulsed fast neutron 

analysis; * thermal neutron activation; * x-ray, including bulk 

explosives detection systems (EDS); * radiation detection; * trace 

detection; * vapor detection; * canine use; Cost, benefits, and 

drawbacks: Cost: Ranges from under $50,000 per unit for trace/vapor 

detection and canine use to over $10 million per unit for pulsed fast 

neutron analysis and certain x-ray.; Benefit: Can indicate potential 

presence of threat objects without opening packages and containers; 

canines are considered best means to screen air cargo because they have 

fewest drawbacks.; Drawback: Some technologies (pulsed fast neutron 

analysis, thermal neutron activation) can take an hour or more per 

object to screen; some technologies (pulsed fast neutron analysis, bulk 

EDS) are very costly; some technologies (x-ray, gamma-ray) do not 

identify specific threat; some technologies (x-ray, gamma-ray) cannot 

discriminate different materials in high density cargo; some 

technologies (bulk EDS, pulsed fast neutron analysis) require building 

modifications in order to accommodate the equipment; all technologies 

have difficulty identifying biological threats..



Type of technology: Seals and other intrusion-detection technology; 

Description: Technology that can be used to determine whether a 

container or conveyance has been tampered with by visual inspection, or 

that emits an alarm or notifies a central control station. Includes 

tamper-evident tape that shows “void” when tampered with, tamper-

evident seals and locking devices, and electronic seals that emit a 

radio signal when tampered with.; Cost, benefits, and drawbacks: Cost: 

Ranges from under $1 per unit for tamper-evident tape to $2,500 per 

unit for electronic seals.; Benefit: Easy and inexpensive way to verify 

tampering within a container or other conveyance.; Drawback: All types 

of seals are known to be vulnerable to tampering, given the appropriate 

tools, time, and opportunity..



Type of technology: Blast-hardened containers; Description: Technology 

to harden cargo containers to control the damage caused by an explosion 

by confining it to a container.; Cost, benefits, and drawbacks: Cost: 

At least $15,000 per unit.; Benefit: Designed to protect aircraft from 

catastrophic structural damage or critical system failure caused by an 

in-flight explosion.; Drawback: Containers are expensive and heavy, 

which results in increased fuel costs..



Type of technology: Access control and authentication; Description: 

Technologies to identify and authenticate individuals or vehicles 

allowed into a restricted area, or to authenticate a driver or 

individual loading goods. This technology includes picture badges, 

biometrics, and “smart cards.”; Cost, benefits, and drawbacks: Cost: 

About $100 per unit for card reader devices; cards are a few cents 

each.; Benefit: Ensures that only authorized persons are handling 

cargo; creates a record of access to controlled areas.; Drawback: Does 

not protect cargo shipments from tampering by persons who are 

authorized access to cargo and cargo-handling areas..



Type of technology: Tracking systems; Description: Technology such as 

global positioning systems and bar codes that can be placed on cargo 

and used to identify freight being shipped or to track the shipment.; 

Cost, benefits, and drawbacks: Cost: Ranges from about $.50 per unit 

for bar coding to about $3,000 per unit for some radio frequency tags.; 

Benefit: Tracks the cargo throughout transport.; Drawback: Does not 

protect cargo shipments from tampering; technology only tracks the 

location of cargo..



Type of technology: Closed circuit television (CCTV); Description: 

Video camera to monitor and store video images. CCTV can be used to 

record the loading of a container into the aircraft and the container 

can be inspected by viewing the archived video.; Cost, benefits, and 

drawbacks: Cost: Ranges from about $50 per camera to about $1,000 per 

camera; cost of additional components (switching and recording devices) 

vary greatly.; Benefit: Improves cargo surveillance by reducing time 

and costs.; Drawback: Video screens require continuous monitoring; does 

not protect cargo shipments from tampering..



Sources:



1. U.S. Treasury Advisory Committee on Commercial Operations of the 

U.S. Customs Service, Technology Report (Washington, D.C.: June 14, 

2002).



2. U.S. DOT, John A. Volpe National Transportation Systems Center, 

Intermodal Cargo Transportation: Industry Best Security Practices 

(Cambridge, Mass.: May 1999).



3. FAA; Air Transport Association, Airforwarders Association; Telair, 

International.



[End of table]



Screening Technologies. Both the Gore Commission and the Cargo Working 

Group recommended using existing technology to screen cargo for 

explosives and developing new technologies to screen cargo for 

explosives. Trace explosives detection devices and bulk explosives 

detection systems, which are currently used to screen passenger baggage 

for explosive material, could also be used to screen cargo containers. 

According to TSA, the use of trace devices to screen cargo has shown 

few problems.



Canines have been identified as one of the most effective ways to 

screen cargo and their use has expanded significantly in recent years, 

based upon recommendations from the Gore Commission and others. In 

addition to screening cargo, canine teams are used at airports to 

respond to suspicious events, such as bomb threats. According to TSA, 

security experts, and industry officials, canine teams have proven 

successful at detecting explosives and are the most promising method 

for screening cargo. As a result, TSA has requested additional funding 

in its fiscal year 2003 budget to expand the use of canine screening 

for certain classes of U.S. mail.



FAA and the National Academy of Sciences have examined another method 

for screening cargo for explosives. Pulsed fast neutron analysis uses 

gamma rays to identify the chemical composition of items in the 

container by measuring their density. This analysis, however, takes 1 

hour per container, and each machine costs about $10 million. As a 

result, according to an FAA official and an aviation security expert, 

the financial cost and the time needed to screen a container make this 

option not viable for current use.



Additionally, decompression chambers are used in some countries to 

screen cargo for bombs. Items to be loaded on a plane are placed in a 

chamber that simulates the pressures acting on aircraft during takeoff, 

normal flight, and landing. These conditions will cause explosives that 

are attached to barometric fuses to detonate.



Intrusion-detection technology. Several technologies, including 

electronic seals and tamper evident tape, could be used to help 

indicate whether cargo has been tampered with during its chain-of-

custody from the point at which a package is sealed by a known shipper 

to its placement on an aircraft. For example, an electronic seal (also 

known as a radio seal) is a radio frequency device that transmits 

shipment information as it passes reader devices and indicates whether 

a container has been compromised. Once security staff are alerted to a 

possible problem, they can physically inspect the cargo. Seals range in 

cost from less than $1 per unit for tamper-evident tape to $2,500 per 

unit for electronic seals. Within the industry, it is recognized that 

seals can easily be tampered with, either by entering the cargo without 

breaking the seal or by removing and replacing the seal. As a result, 

security experts recommend that seals be used in conjunction with other 

security procedures as part of a more comprehensive security plan. 

Additionally, in tests conducted during the fall of 2001, FAA found 

that electronic seals have limited signal strength and must be read at 

relatively short, line-of-sight distances. Finally, industry officials 

have indicated their concern about the use of electronic seals on 

aircraft because of their potential to interfere with aircraft 

electronics.



Blast-hardened cargo containers. Hardening cargo containers that are 

loaded onto aircraft has the potential to reduce damage from 

explosions, according to experts with whom we spoke. These containers 

are designed to protect aircraft from catastrophic structural damage or 

critical system failure caused by an in-flight explosion. TSA continues 

to conduct research in this area, which FAA began in 1991 based on 

requirements in the Aviation Security Improvement Act of 1990. TSA has 

tested and approved containers made by two manufacturers for use on 

aircraft. According to industry representatives, air carriers have 

resisted using the containers because they are significantly more 

expensive than standard containers. Specifically, a blast-hardened 

container costs approximately $15,000, as compared with about $1,000 

for a standard container, according to air carrier representatives. 

Blast-hardened containers also weigh approximately 150 pounds more than 

standard containers, which adds to the airplane’s fuel costs, according 

to air carrier representatives. For example, if a Boeing 747 aircraft 

traveling from New York to Tokyo had blast-hardened containers, the 

extra weight would result in $5,000 in additional fuel costs, according 

to an industry official. Furthermore, as blast-hardened containers are 

bumped and scratched during shipping, their blast-resistant 

capabilities are reduced and their lifespan may be shortened to less 

than 1 year, according to an industry official. By comparison, a 

standard container lasts as long as 8 years, according to industry 

officials. Industry officials said that the containers have been used 

by very few air carriers.[Footnote 5] TSA has also conducted research 

on hardened hulls--that is, placing blast-resistant liners in the cargo 

hold to protect the aircraft if an explosion occurs--but liners did not 

successfully resist explosions in initial testing, according to a TSA 

official. FAA continues to conduct testing on aircraft hardening (both 

containers and hulls) at a cost of approximately $3 million per year.



Operational Practices to Enhance Air Cargo Security:



Industry and government officials, security experts, and studies we 

reviewed also identified procedures and best practices to strengthen 

air cargo security. Some of these activities, such as developing an 

industrywide cargo profiling system, were recommendations to FAA by the 

Gore Commission and others; other activities were identified as best 

practices for companies that transport and handle cargo. (See table 2.) 

Some of the practices are discussed in greater detail after the table.



Table 2: Information on Operational Practices to Enhance Air Cargo 

Security:



Practice: Develop an industrywide computer-assisted cargo profiling 

system that can be integrated into air carriers’ and freight 

forwarders’ reservation and operating systems.; Comments: * TSA has 

developed a known shipper database. As of October 10, 2002, information 

on the known shippers of 250 participating air carriers and freight 

forwarders had been entered in the data base.; * TSA began making the 

database available to participating air carriers and freight forwarders 

in October 2002.; * Participation is voluntary..



Practice: Improve the oversight and enforcement of air carriers and 

freight forwarders.; Comments: * TSA estimates that it will need 

additional cargo inspectors for fiscal year 2003, especially because 

some cargo inspectors will remain with FAA when TSA is transferred to 

the Department of Homeland Security..



Practice: Use identification card systems to verify individuals 

authorized to enter cargo-handling facilities.; Comments: * TSA 

requires identity checks for individuals entering certain areas of 

airports.; * Requirements for identity checks at cargo facilities that 

are located off airport property are determined by the individual 

facilities in accordance with their security plan..



Practice: Conduct background checks on all individuals who convey and 

handle air cargo and have access to cargo areas and documentation.; 

Comments: * TSA requires background checks for certain airport 

workers.; * Requirements for background checks on other individuals who 

convey and handle air cargo are determined by individual employers in 

accordance with their security plan..



Practice: Collect and disseminate information concerning cargo 

security, including threat-related information, among air carriers, 

forwarders, and government agencies.; Comments: * TSA disseminates 

general threat information to the industry in security directives and 

information circulars.; * Industry officials state that specific threat 

information is not getting to the airline workers who handle cargo..



Practice: Establish written policies and procedures and training 

programs for the employees of companies that convey and handle cargo.; 

Comments: * TSA requires air carriers that transport passengers to have 

security programs..



Practice: Employ a sufficient number of qualified security officers at 

cargo facilities to provide physical security and access control.; 

Comments: * Use of security officers at cargo facilities is determined 

by the individual facilities in accordance with their security plan..



Practice: Use physical barriers (walls, fences) to guard against 

unauthorized access to cargo areas.; Comments: * Use of physical 

barriers at cargo facilities is determined by the individual facilities 

in accordance with their security plan..



Sources:



1. U.S. DOT, John A. Volpe National Transportation Systems Center, 

Intermodal Cargo Transportation: Industry Best Security Practices 

(Cambridge, Mass.: May 1999).



2. U.S. Treasury Advisory Committee on Commercial Operations of the 

U.S. Customs Service, Technology Report (Washington, D.C.: June 14, 

2002).



3. TSA; final report by the White House Commission on Aviation Safety 

and Security; Cargo Working Group; Air Transport Association; 

Airforwarders Association; Cargo Airlines Association.



[End of table]



Cargo profiling. The Gore Commission recommended that FAA work with 

industry to develop a computer-assisted cargo profiling system that 

could be integrated into airlines’ and freight forwarders’ reservations 

and operating systems. Since 1997, FAA and now TSA have been working to 

develop a cargo profiling system that is similar to the Computer 

Assisted Passenger Prescreening System.[Footnote 6] The first phase of 

developing the cargo profiling system is the nationwide deployment of a 

database of known shippers. TSA began field-testing a computerized 

known shipper database in October 2002. About 250 air carriers and 

freight forwarders have provided information on their known shippers 

for TSA’s database, which contains about 165,000 shipping companies, 

according to TSA officials. In addition, the database includes the 

names of restricted entities from the Department of the Treasury’s 

Office of Foreign Assets Control. Participants in the field test have 

the opportunity to query a TSA Internet site to ascertain the status of 

shippers unknown to them. An electronic message is provided, indicating 

whether the shipper is known or unknown. If the shipper is known, a 

unique identification number is electronically provided to the 

participant and the cargo can be accepted from that shipper as “known 

shipper cargo.” If the shipper is a restricted entity, the participant 

receives a warning against receiving shipments from that entity. 

According to security experts and industry association officials, this 

system would enhance air cargo security by allowing freight forwarders 

to quickly determine whether a company is a known shipper. In addition, 

this system would allow a shipper that is known to one freight 

forwarder to become known to all freight forwarders. However, during 

the pilot phase the use of this system is voluntary, and its success 

will depend, in part, upon widespread participation. According to TSA 

officials, the agency has made no decision about whether participation 

will be voluntary after the pilot is completed, at the end of December 

2002. According to industry representatives, some freight forwarders 

are reluctant to participate because of concerns about placing 

themselves at a competitive disadvantage by including their customers 

in the database.



Oversight and enforcement. To enhance its oversight of freight 

forwarders and air carriers, TSA conducts routine inspections. 

According to TSA officials, the agency is considering increasing the 

frequency of these inspections. To achieve targeted increases in the 

number of inspections, TSA estimates that it needs to hire several 

hundred additional cargo inspectors in fiscal year 2003, especially 

since some of its current inspector workforce will remain with FAA when 

TSA is transferred to the Department of Homeland Security.



Identification checks. Identification checks of individuals making 

deliveries to freight forwarders and airline cargo facilities would 

help to ensure the identities of employees of known shippers and has 

been recommended as a best practice for cargo security by DOT. Freight 

forwarders and air carriers are not required to check and record 

identification information for employees of known shippers. TSA 

regulations require identification checks of individuals who enter 

restricted areas of airports, which include cargo-handling areas. That 

information is usually recorded manually, according to industry 

officials. However, the use of technology such as smart cards can make 

this process more efficient and reliable, according to security 

experts. For example, Chicago’s O’Hare Airport, with a $1.5 million 

research grant provided by FAA in 1997, developed and operationally 

tested a smart card/biometric-based security access system. This system 

uses fingerprint biometrics to verify the identity of truck drivers 

delivering cargo to the airport and information encoded on a smart card 

to match the driver with the cargo being delivered. The results of the 

operational tests, completed in July 1999, indicated that fingerprints 

provide a highly reliable means of confirming driver identity, and that 

having the cargo manifests and related information on the smart card 

dramatically reduces the time required to process cargo deliveries. 

According to TSA officials, the agency does not have plans to further 

deploy such identification verification technology to airports.



Threat information. Dissemination of security-related information, 

including threat information, to carriers and freight forwarders has 

been recommended by DOT as a best practice for cargo security across 

the transportation modes.[Footnote 7] According to TSA, it provides 

such information to the aviation industry by means of security 

directives and information circulars. Since September 2001, TSA has 

issued three directives related to air cargo. However, industry 

officials told us that the threat information provided is usually not 

sufficiently specific to be acted upon by the workers who handle the 

cargo. Air carrier officials stated that more specific information 

about threats would allow them to conduct targeted inspections of 

cargo, which they believe would be more effective than the random 

inspections that have been proposed in legislation and suggested by 

some, including DOT’s OIG. However, according to TSA officials, the 

agency provides the best threat information that is generally 

available.



A Comprehensive Plan and Risk Management Approach Have Been Identified 

As Ways to Improve Air Cargo Security in the Long Term:



The Gore Commission and aviation industry representatives have 

suggested that FAA implement a comprehensive plan to address the threat 

of explosives and other dangerous objects in cargo. In addition, we 

have recommended that the federal government adopt a risk management 

approach to combat terrorism. Without a comprehensive plan for air 

cargo security that incorporates a risk management approach, TSA and 

other federal decisionmakers cannot know whether resources are being 

deployed as effectively and efficiently as possible to reduce the risk 

and mitigate the consequences of a terrorist attack. Moreover, as air 

cargo security is viewed in the larger context of transportation and 

homeland security, the lack of a risk management approach hinders 

efforts to set strategic priorities.



Developing a Comprehensive Plan for Air Cargo Security:



Neither FAA nor TSA has developed a comprehensive plan for air cargo 

security as recommended by the Gore Commission, which would provide a 

first step toward meeting the requirement of the Aviation and 

Transportation Security Act to have a system in place to ensure the 

security of cargo. TSA officials have told us that the agency intends 

to issue a long-term plan for cargo security, but they were unsure when 

that would occur. Meanwhile, according to agency officials, TSA is in 

the early stages of developing an agencywide strategic plan that is to 

include the air cargo security program. As of April 2002, the draft 

strategic plan had identified one performance measure concerning air 

cargo security. Our analysis indicated that this measure--the progress 

of federalization of the cargo-screening process--focused more on 

process than on results. However, TSA has stated that it intends to 

further develop measures in the future. TSA also said that it would 

include these measures and their associated goals in its fiscal year 

2003 performance plan.



Implementing a Risk Management Approach:



Over the past year, we have determined that a risk management approach 

used by the Department of Defense to defend against terrorism also has:



relevance for other organizations responsible for security.[Footnote 8] 

This approach can provide those organizations with a process for 

enhancing their preparedness to respond to terrorist attacks and to 

support decisionmaking to manage security risks in a cost-effective 

manner. Figure 5 describes this approach.



Figure 5: Elements of a Risk Management Approach:



[See PDF for Image]

[End of Figure]



TSA has partially developed a risk management approach. In the fall of 

2001, FAA completed an assessment of the threats to and vulnerabilities 

of air cargo. The assessment examined a single scenario--a terrorist 

attempting to place a bomb on a commercial passenger aircraft. The 

assessment did not examine the vulnerabilities associated with the 

pathways by which shipments are transported by truck or other means 

from the shipper to the aircraft (see fig. 1 above). According to TSA 

officials, the agency does not have plans to conduct further threat 

assessments for air cargo.



TSA has not undertaken a criticality assessment--the third element we 

identified in a risk management approach--and therefore has no explicit 

criteria for determining the priority of actions to enhance air cargo 

security. However, according to TSA officials, passenger aircraft 

security is a higher priority than all-cargo aircraft security. 

According to TSA officials, their priorities are spelled out in the 

Aviation and Transportation Security Act, which has laid out specific 

deadlines dealing primarily with passenger and baggage screening for 

TSA to address over the past year. As we have reported, TSA has faced 

an extraordinary challenge in meeting some of those deadlines, such as 

hiring and training 33,000 employees to conduct passenger security 

screening by November 19, 2002.[Footnote 9] The act provides no 

specific deadlines for enhancing air cargo security but requires having 

a system in place as soon as practicable to screen cargo on all-cargo 

aircraft or otherwise ensure its security.



Conclusion:



Over the past year, with the passage of the Aviation and Transportation 

Security Act, our nation has placed new emphasis on aviation security. 

However, few changes have been made to air cargo security, as TSA has 

focused its efforts on improving passenger and baggage security to meet 

specific legislative deadlines. The act requires the screening of all 

cargo aboard commercial passenger aircraft and requires TSA to have a 

system in place as soon as practicable to screen or otherwise ensure 

the security of cargo on all-cargo aircraft. The large volume of air 

cargo and the fact that its delivery is generally considered time-

critical result in a limited amount of cargo being screened. Other 

means to ensure air cargo security include technological and 

operational improvements that have been identified or recommended by 

various government and industry groups over the past decade. While TSA 

has been developing some of these measures, such as blast-hardened 

containers and a cargo profiling system, it has not implemented other 

identified improvements. Moreover, TSA lacks a comprehensive plan with 

long-term goals and performance targets for cargo security, time frames 

for completing security improvements, and risk-based criteria for 

prioritizing actions to achieve those goals. A comprehensive plan for 

air cargo security that incorporates a risk management approach could 

provide a framework for systematically evaluating and prioritizing the 

various technological and operational improvements that have already 

been identified, and for identifying and implementing additional 

improvements. Such a plan would also provide a framework for developing 

a system to ensure air cargo security, as required by the act.



Recommendation for Executive Action:



We recommend that the Under Secretary of Transportation for Security 

develop a comprehensive plan for air cargo security that includes 

priority actions identified on the basis of risk, costs of these 

actions, deadlines for completing those actions, and performance 

targets.



Agency Comments:



We provided DOT with a draft of this report for review and comment. DOT 

provided oral comments. FAA’s Deputy Director, Office of Security and 

Investigations, and agency officials from TSA with responsibility for 

cargo-security issues generally agreed with the information presented 

in the report. TSA officials stated that the recommendation was 

reasonable and that they will consider implementing it as the agency 

moves forward with its cargo-security program. These officials provided 

a number of clarifying comments, which we have incorporated where 

appropriate.



As agreed with your offices, unless you announce the contents of this 

report earlier, we plan no further distribution until 30 days from the 

report date. At that time, we will send copies of this report to 

interested congressional committees, the Secretary of Transportation, 

and the Under Secretary of Transportation for Security. Copies will 

also be made available to others upon request and this report will be 

available for no charge on GAO’s Web site at www.gao.gov. If you or 

your staff have any questions, please call me at (202) 512-2834. 

Individuals making key contributions to this report included Wayne A. 

Ekblad, Elizabeth Eisenstadt, Colin J. Fallon, Bert Japikse, Maren 

McAvoy, John W. Shumann, Teresa F. Spisak, and Cindy M. Steinfink. In 

addition, we would like to acknowledge, in memoriam, the contributions 

to this report made by Angela Davis.



Gerald L. Dillingham

Director, Physical Infrastructure Issues:

Signed by Gerald Dillingham:



[End of section]



Appendix I: Air Cargo Incidents and Follow-Up Actions:



Agency actions and the introduction of new legislation to improve 

security and safety have often come in reaction to aviation tragedies. 

The following time line (fig. 6) reflects key changes in air cargo 

security following the bombing of Pan Am flight 103 over Lockerbie, 

Scotland; the crashes of ValuJet flight 592 in the Florida Everglades 

and TWA flight 800 over Long Island; and the terrorist attacks in the 

United States involving four jet airliners on September 11, 2001.



Figure 6: Time Line of Key Changes in Air Cargo Security:



[See PDF for image]



[End of figure]



[End of section]



Appendix II: Proposed Legislation on Air Cargo Security:



In November 2002, the Senate approved S. 2949. The bill, comprising 

seven sections, includes clauses affecting air cargo security under 

Title II.



Title II of S. 2949 would instruct TSA to develop a strategic plan to 

establish systems to screen, inspect, or otherwise ensure the security 

of all cargo transported through the nation’s air transportation 

system. It also imposes measures that would require TSA to increase 

inspections of air cargo shippers and their facilities and to work with 

foreign countries to conduct regular inspections at facilities 

transporting air cargo to the United States. Title II would require the 

creation of an industrywide pilot database of known shippers of cargo 

in passenger aircraft. TSA would also be required to conduct random 

inspections of freight forwarder facilities, perform an assessment of 

the current Indirect Air Carrier Program,[Footnote 10] and report to 

Congress on the random audit system. Upon the recommendation of the 

Under Secretary of Transportation for Security, the Secretary of 

Transportation would be required to suspend or revoke the certificate 

of a noncompliant freight forwarder.



Title II would direct TSA to develop a training program for air cargo 

handlers. TSA would also be required to create a program for all-cargo 

air carriers to develop an approved plan for the security of their 

facilities, operations, cargo, and personnel. Any plan would need to 

address the security of the carrier’s property at each airport it 

serves, the background checks for all employees with access to 

operations, the training for all employees and contractors with 

security responsibilities, the screening of all flight crews and others 

aboard flights, the security procedures for cargo, and other necessary 

measures.



[End of section]



Appendix III: Key Recommendations on Air Cargo Security:



Since 1990, recommendations have been made or mandates issued to 

improve air cargo security by the Aviation Security Improvement Act of 

1990, the White House Commission on Aviation Safety and Security (also 

called the Gore Commission), the Cargo Working Group (an FAA-industry 

partnership), and DOT’s Office of Inspector General (OIG). Table 3 

summarizes key recommendations. The left column describes the 

recommendation, the group(s) that made the recommendation, and the date 

it was made; the right column shows the status of the recommendation.



Table 3: Status of Key Recommendations on Air Cargo Security:



Recommendation: Tighten the definition of “known shipper” to ensure a 

greater measure of security in the transportation of cargo on passenger 

aircraft.; (Cargo Working Group,1996); Status: FAA changed the 

definition of known shipper in September 1999. The change required that 

a known shipper must have an established business history with the air 

carrier or freight forwarder..



Recommendation: Conduct a feasibility study on the establishment of a 

third party inspection and compliance program for the Indirect Air 

Carrier Program,[A] and distribute inspection results to the industry.; 

(Cargo Working Group, 1996); Status: Not conducted by FAA..



Recommendation: Cooperate with industry to explore technologies to 

develop a profile to be applied to cargo shipments.; (Gore Commission, 

1997); Status: FAA issued a final report on how to develop a computer-

assisted cargo profiling system. TSA began field testing the system in 

October 2002 and expects to issue a progress report in December 2002..



Recommendation: Establish, in cooperation with the air cargo industry, 

a training program directed at passenger air carriers, freight 

forwarders, and contract ground personnel. The training program will: 

1) include cargo acceptance and ground transport measures, 2) require 

initial and recurrent participation and documentation, and 3) be 

incorporated in the Air Carrier Standard Security Program and the 

Indirect Air Carrier Standard Security 

Program.; (Cargo Working Group, 1996); Status: FAA worked with the air 

cargo industry to develop a training tape and guidance for 

understanding and implementing program requirements..



Recommendation: Improve the line of communication between FAA field, 

principal security inspectors, and regional cargo-security 

coordinators through a training program coordinated with the industry.; 

(Cargo Working Group, 1996); Status: In September 1999, FAA developed a 

Cargo Security Basic Course to familiarize newly hired FAA cargo 

security inspectors with the regulatory requirements placed on domestic 

and international shippers, and on air carriers who submit and accept 

freight for air carriage..



Recommendation: Conduct research and development to find an effective 

explosives detection system to screen baggage and cargo; institute 

interim screening measures until this system is developed.; (Aviation 

Security Improvement Act, 1990); ; Deploy advanced technology on a 

test-and-evaluation 

for use in screening cargo in an operational environment.; (Cargo 

Working Group, 1997); Status: TSA conducted operational tests of trace 

explosives detection devices to screen air cargo, and it considered the 

test successful. The agency also conducted research on Pulsed Fast 

Neutron Analysis to screen cargo for explosives and found it not viable 

because of cost ($10 million per unit) and time (screens one container 

per hour). TSA budgeted $7 million in fiscal year 2002 to conduct 

research on new technologies to screen air cargo, and budgeted $13 

million in fiscal year 2003 for that purpose..



Recommendation: Implement a comprehensive plan to address the threat of 

explosives and other threat objects in cargo, and work with industry to 

develop new initiatives in this area.; (Gore Commission, 1997); Status: 

Not implemented..



Recommendation: Conduct regularly scheduled assessments of air carrier 

and freight forwarder operations.; (OIG, 1998); Status: FAA inspections 

were expanded to include shippers and freight forwarders, and a 

database was established to record assessment information..



[A] An indirect air carrier is a freight forwarder.



Sources: GAO analysis of reports by the White House Commission on 

Aviation Safety and Security (Gore Commission), Cargo Working Group, 

and DOT’s Office of Inspector General; the Aviation Security 

Improvement Act of 1990; and information provided by TSA.



[End of table]



GAO’s Mission:



The General Accounting Office, the investigative arm of Congress, 

exists to support Congress in meeting its constitutional 

responsibilities and to help improve the performance and accountability 

of the federal government for the American people. GAO examines the use 

of public funds; evaluates federal programs and policies; and provides 

analyses, recommendations, and other assistance to help Congress make 

informed oversight, policy, and funding decisions. GAO’s commitment to 

good government is reflected in its core values of accountability, 

integrity, and reliability.

:



Obtaining Copies of GAO Reports and Testimony:



The fastest and easiest way to obtain copies of GAO documents at no 

cost is through the Internet. GAO’s Web site (www.gao.gov) contains 

abstracts and full-text files of current reports and testimony and an 

expanding archive of older products. The Web site features a search 

engine to help you locate documents using key words and phrases. You 

can print these documents in their entirety, including charts and other 

graphics.



Each day, GAO issues a list of newly released reports, testimony, and 

correspondence. GAO posts this list, known as “Today’s Reports,” on its 

Web site daily. The list contains links to the full-text document 

files. To have GAO e-mail this list to you every afternoon, go to 

www.gao.gov and select “Subscribe to daily E-mail alert for newly 

released products” under the GAO Reports heading.

:



Order by Mail or Phone:



The first copy of each printed report is free. Additional copies are $2 

each. A check or money order should be made out to the Superintendent 

of Documents. GAO also accepts VISA and Mastercard. Orders for 100 or 

more copies mailed to a single address are discounted 25 percent. 

Orders should be sent to:



U.S. General Accounting Office

441 G Street NW, Room LM

Washington, D.C. 20548:



To order by Phone: Voice: (202) 512-6000 

TDD: (202) 512-2537

Fax: (202) 512-6061

:



To Report Fraud, Waste, and Abuse in Federal Programs:



Contact:



Web site: www.gao.gov/fraudnet/fraudnet.htm

E-mail: fraudnet@gao.gov

Automated answering system: (800) 424-5454 or (202) 512-7470

:



Public Affairs:



Jeff Nelligan, managing director, NelliganJ@gao.gov (202) 512-4800

U.S. General Accounting Office, 441 G Street NW, Room 7149 

Washington, D.C. 20548:



FOOTNOTES



[1] A revenue ton mile is one ton of cargo transported one mile.



[2] In this report, “passenger aircraft” refers to both commercial 

passenger aircraft and “combination aircraft,” in which the fuselage is 

configured to accommodate both passengers and cargo. The term “cargo 

aircraft” refers to all-cargo aircraft.



[3] According to DOT, air cargo (measured in revenue ton miles) carried 

by U.S. commercial air carriers is expected to grow annually by about 

one percentage point more than that forecasted for passenger travel 

(measured in revenue passenger miles) for the 12-year period 2002-2013.



[4] An electronic seal is a radio frequency device that transmits 

shipment information as it passes reader devices and transmits an alarm 

if a container has been compromised.



[5] El Al Airline, Israel’s national airline, uses some blast-resistant 

containers to transport cargo. 



[6] This system identifies passengers as greater security risks based 

on characteristics of their travel and targets these individuals for 

additional screening. 



[7] U.S. DOT, John A. Volpe National Transportation Systems Center, 

Intermodal Cargo Transportation: Industry Best Security Practices 

(Cambridge, Mass.: May 1999). 



[8] U.S. General Accounting Office, Homeland Security: A Risk 

Management Approach Can Guide Preparedness Efforts, GAO-02-208T 

(Washington, D.C.: Oct. 31, 2001).



[9] U.S. General Accounting Office, Aviation Security: Transportation 

Security Administration Faces Immediate and Long-Term Challenges, 

GAO-02-971T (Washington, D.C.: July 25, 2002). 



[10] An indirect air carrier is another term for a freight forwarder.



GAO’s Mission:



The General Accounting Office, the investigative arm of Congress, 

exists to support Congress in meeting its constitutional 

responsibilities and to help improve the performance and accountability 

of the federal government for the American people. GAO examines the use 

of public funds; evaluates federal programs and policies; and provides 

analyses, recommendations, and other assistance to help Congress make 

informed oversight, policy, and funding decisions. GAO’s commitment to 

good government is reflected in its core values of accountability, 

integrity, and reliability.



Obtaining Copies of GAO Reports and Testimony:



The fastest and easiest way to obtain copies of GAO documents at no 

cost is through the Internet. GAO’s Web site ( www.gao.gov ) contains 

abstracts and full-text files of current reports and testimony and an 

expanding archive of older products. The Web site features a search 

engine to help you locate documents using key words and phrases. You 

can print these documents in their entirety, including charts and other 

graphics.



Each day, GAO issues a list of newly released reports, testimony, and 

correspondence. GAO posts this list, known as “Today’s Reports,” on its 

Web site daily. The list contains links to the full-text document 

files. To have GAO e-mail this list to you every afternoon, go to 

www.gao.gov and select “Subscribe to daily E-mail alert for newly 

released products” under the GAO Reports heading.



Order by Mail or Phone:



The first copy of each printed report is free. Additional copies are $2 

each. A check or money order should be made out to the Superintendent 

of Documents. GAO also accepts VISA and Mastercard. Orders for 100 or 

more copies mailed to a single address are discounted 25 percent. 

Orders should be sent to:



U.S. General Accounting Office



441 G Street NW,



Room LM Washington,



D.C. 20548:



To order by Phone: 	



	Voice: (202) 512-6000:



	TDD: (202) 512-2537:



	Fax: (202) 512-6061:



To Report Fraud, Waste, and Abuse in Federal Programs:



Contact:



Web site: www.gao.gov/fraudnet/fraudnet.htm E-mail: fraudnet@gao.gov



Automated answering system: (800) 424-5454 or (202) 512-7470:



Public Affairs:



Jeff Nelligan, managing director, NelliganJ@gao.gov (202) 512-4800 U.S.



General Accounting Office, 441 G Street NW, Room 7149 Washington, D.C.



20548: