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United States Government Accountability Office: 
GAO: 

Testimony: 

Before the Subcommittee on Transportation Security, Committee on 
Homeland Security, House of Representatives: 

For Release on Delivery: 
Expected at 2:00 p.m. EST:
Wednesday, March 9, 2011: 

Aviation Security: 

Progress Made, but Challenges Persist in Meeting the Screening Mandate 
for Air Cargo: 

Statement of Steve Lord, Director:
Homeland Security and Justice Issues: 

GAO-11-413T: 

United States Government Accountability Office:
GAO: 

GAO Highlights: 

Highlights of GAO-11-413T, a testimony before the Subcommittee on 
Transportation Security, Committee on Homeland Security, House of 
Representatives. 

Why GAO Did This Study: 

The Department of Homeland Security’s (DHS) Transportation Security 
Administration (TSA) is the federal agency with primary responsibility 
for securing the air cargo system. The Implementing Recommendations of 
the 9/11 Commission Act of 2007 mandated DHS to establish a system to 
screen 100 percent of cargo flown on passenger aircraft by August 
2010. GAO reviewed TSA’s progress in meeting the act’s screening 
mandate, and any related challenges it faces for both domestic (cargo 
transported within and from the United States) and inbound cargo 
(cargo bound for the United States). This statement is based on prior 
reports and testimonies issued from April 2007 through December 2010 
addressing the security of the air cargo transportation system and 
selected updates made in February and March 2011. For the updates, GAO 
obtained information on TSA’s air cargo security programs and 
interviewed TSA officials. 

What GAO Found: 

As of August 2010, TSA reported that it met the mandate to screen 100 
percent of air cargo as it applies to domestic cargo, but as GAO 
reported in June 2010, TSA lacked a mechanism to verify the accuracy 
of the data used to make this determination. TSA took several actions 
in meeting this mandate for domestic cargo, including creating a 
voluntary program to facilitate screening throughout the air cargo 
supply chain; taking steps to test technologies for screening air 
cargo; and expanding its explosives detection canine program, among 
other things. However, in June 2010 GAO reported that TSA did not have 
a mechanism to verify screening data and recommended that TSA 
establish such a mechanism. TSA partially concurred with this 
recommendation and stated that verifying such data would be 
challenging. As GAO reported in June 2010, data verification is 
important to provide reasonable assurance that screening is being 
conducted at reported levels. As GAO further reported in June 2010, 
there is no technology approved or qualified by TSA to screen cargo 
once it is loaded onto a pallet or container—both of which are common 
means of transporting domestic air cargo on passenger aircraft. As a 
result, questions remain about air carriers’ ability to effectively 
screen air cargo on such aircraft. 

TSA has also taken a number of steps to enhance the security of 
inbound air cargo, but also faces challenges that could hinder its 
ability to meet the screening mandate. TSA moved its deadline for 
meeting the 100 percent screening mandate as it applies to inbound air 
cargo to the end of 2011, up 2 years from when the TSA administrator 
previously reported the agency would meet this mandate. According to 
TSA officials, the agency determined it was feasible to accelerate the 
deadline as a result of trends in air carrier reported screening data 
and discussions with air cargo industry leaders regarding progress 
made by industry to secure cargo on passenger aircraft. TSA also took 
steps to enhance the security of inbound cargo following the October 
2010 Yemen air cargo bomb attempt—such as requiring additional 
screening of high-risk cargo prior to transport on an all-cargo 
aircraft. However, TSA continues to face challenges GAO identified in 
June 2010 that could impact TSA’s ability to meet this screening 
mandate as it applies to inbound air cargo. For example, GAO reported 
that TSA’s screening percentages were estimates and were not based on 
actual data collected from air carriers or other entities, such as 
foreign governments, and recommended that TSA establish a mechanism to 
verify the accuracy of these data. TSA partially agreed, and required 
air carriers to report inbound cargo screening data effective May 
2010. However, TSA officials stated while current screening 
percentages are based on actual data reported by air carriers, 
verifying the accuracy of the screening data is difficult. It is 
important for TSA to have complete and accurate data to verify that 
the agency can meet the screening mandate. GAO will continue to 
monitor these issues as part of its ongoing review of TSA’s efforts to 
secure inbound air cargo, the final results to be issued later this 
year. 

What GAO Recommends: 

GAO has made recommendations in prior work to strengthen air cargo 
screening. Although not fully concurring with all recommendations, TSA 
has taken or has a number of actions underway to address them. 
Continued attention is needed to ensure some recommendations are 
addressed, such as establishing a mechanism to verify screening data. 
TSA provided technical comments on the information in this statement, 
which GAO incorporated as appropriate. 

View [hyperlink, http://www.gao.gov/products/GAO-11-413T] or key 
components. For more information, contact Steve Lord at (202) 512-4379 
or lords@gao.gov. 

[End of section] 

Mr. Chairman and Members of the Subcommittee: 

I appreciate the opportunity to participate in today's hearing to 
discuss the security of the nation's air cargo system. In 2009, about 
6.5 billion pounds of cargo were transported on U.S. passenger 
flights--approximately 56 percent of which was transported 
domestically (domestic cargo) and 44 percent of which was transported 
on flights arriving in the United States from a foreign location 
(inbound cargo).[Footnote 1] The October 2010 discovery of explosive 
devices in air cargo packages bound for the United States from Yemen, 
and the 2009 Christmas Day plot to detonate an explosive device during 
an international flight bound for Detroit, provide vivid reminders 
that civil aviation remains a key terrorist target. According to the 
Transportation Security Administration (TSA), the security threat 
posed by terrorists introducing explosive devices in air cargo 
shipments is significant, and the risk and likelihood of such an 
attack directed at passenger aircraft is high. 

The Aviation and Transportation Security Act (ATSA), enacted into law 
shortly after the September 11, 2001, terrorist attacks, established 
TSA and gave the agency responsibility for securing all modes of 
transportation, including the nation's civil aviation system, which 
includes air carrier operations (domestic and foreign) to, from, and 
within the United States.[Footnote 2] For example, ATSA requires that 
TSA provide for the screening of all passengers and property, 
including cargo, transported on passenger aircraft.[Footnote 3] ATSA 
further requires that a system be in operation, as soon as practicable 
after ATSA's enactment (on November 19, 2001), to screen, inspect, or 
otherwise ensure the security of the cargo transported by all-cargo 
aircraft--generally, aircraft that carry only cargo and no passengers--
to, from, and within the United States.[Footnote 4] To help enhance 
the security of air cargo, the Implementing Recommendations of the 
9/11 Commission Act of 2007 (9/11 Commission Act) mandated the 
Department of Homeland Security (DHS) to establish a system to screen 
100 percent of cargo on passenger aircraft--including the domestic and 
inbound flights of foreign and U.S. passenger operations--by August 
2010.[Footnote 5] The 9/11 Commission Act defines screening for 
purposes of the air cargo screening mandate as a physical examination 
or nonintrusive methods of assessing whether cargo poses a threat to 
transportation security. [Footnote 6] The act further requires that 
such a system provide a level of security commensurate with the level 
of security for the screening of checked baggage. According to TSA, 
the mission of its air cargo security program is to secure the air 
cargo transportation system while not unduly impeding the flow of 
commerce. Although the mandate is applicable to both domestic and 
inbound cargo, TSA stated that it must address the mandate for 
domestic and inbound cargo through separate systems because of 
limitations in its authority to regulate international air cargo 
industry stakeholders operating outside the United States. 

My statement today addresses TSA's progress and challenges in meeting 
the 9/11 Commission Act mandate to screen air cargo on passenger 
flights, both domestic cargo and cargo transported from a foreign 
location to the United States, known as inbound air cargo. My comments 
are based primarily on our prior reports and testimonies issued from 
April 2007 through December 2010 addressing the security of the air 
cargo transportation system, with selected updates in February and 
March 2011.[Footnote 7] For these reports, we reviewed documents such 
as TSA's air cargo security policies and procedures and conducted site 
visits to four category X airports and one category I airport in the 
United States that process domestic and inbound air cargo.[Footnote 8] 
We selected these airports based on airport size, passenger and air 
cargo volumes, location, and participation in TSA's screening program. 
For the updates, we obtained information on TSA's air cargo security 
programs and interviewed senior TSA officials regarding plans, 
strategies, and steps taken to meet the 100 percent screening mandate 
since December 2010. More detailed information about our scope and 
methodology is included in our reports and testimonies. We conducted 
this work in accordance with generally accepted government auditing 
standards. We shared the information in this statement with TSA 
officials who provided technical comments that were incorporated as 
appropriate. 

TSA Reports that It Met the Screening Mandate as It Applies to 
Domestic Cargo, but Previously Identified Data Limitations and Other 
Challenges Persist: 

TSA took several actions to address the 9/11 Commission Act mandate to 
screen 100 percent of air cargo as it applies to domestic cargo 
transported on passenger aircraft by August 2010. As of August 2010, 
TSA reported that it met the 9/11 Commission Act mandate to screen 100 
percent of air cargo as it applies to domestic cargo, although in June 
2010 we reported that TSA lacked a mechanism to verify the accuracy of 
the data used to make this determination. 

To help meet the mandate, TSA took several actions, among them: 

TSA created a voluntary program to facilitate screening throughout the 
air cargo supply chain. Since TSA concluded that relying solely on air 
carriers to conduct screening would result in significant cargo 
backlogs and flight delays, TSA created the voluntary Certified Cargo 
Screening Program (CCSP) to allow screening to take place earlier in 
the shipping process, prior to delivering the cargo to the air 
carrier. Under the CCSP, facilities at various points in the air cargo 
supply chain, such as shippers, manufacturers, warehousing entities, 
distributors, third-party logistics companies, and freight forwarders 
that are located in the United States, may voluntarily apply to TSA to 
become certified cargo screening facilities (CCSF).[Footnote 9] TSA 
initiated the CCSP at 18 U.S. airports that process high volumes of 
air cargo, and then expanded the program to all U.S. airports in early 
2009. 

TSA is taking steps to test technologies for screening air cargo. To 
test select screening technologies among CCSFs, TSA created the Air 
Cargo Screening Technology Pilot in January 2008, and selected some of 
the nation's largest freight forwarders to use these technologies and 
report on their experiences.[Footnote 10] In a separate effort, in 
July 2009, DHS's Directorate for Science and Technology completed the 
Air Cargo Explosives Detection Pilot Program that tested the 
performance of select baggage screening technologies for use in 
screening air cargo at three U.S. airports. In March 2009, TSA 
initiated a qualification process to test these and other technologies 
for air carriers and CCSP participants to use in meeting the screening 
mandate against TSA technical requirements. In December 2009, TSA 
issued to air carriers and CCSFs its first list of qualified 
technologies which included X-ray and explosives detection systems 
(EDS) models that the agency approved for screening air cargo under 
the 9/11 Commission Act. Over the past several years, TSA has 
evaluated and qualified additional technologies and has issued 
subsequent lists, most recently in February 2011. These technologies 
were in addition to the canine and physical search screening methods 
permitted by TSA. 

TSA expanded its explosives detection canine program. As of February 
2011, TSA officials stated that the agency had 113 dedicated air cargo 
screening canine teams--operating in 20 airports--and was in the 
process of adding 7 additional canine teams. TSA headquarters 
officials explained that two CCSFs are participating in a pilot 
program to test the feasibility of using private canine teams--that 
meet TSA standards--to inspect air cargo. Officials stated that the 
pilot is expected to continue through summer 2011. 

Even with these actions, TSA continues to face challenges that, among 
other things, could limit the agency's ability to provide reasonable 
assurance that screening is being conducted at reported levels. Among 
the challenges and recommendations previously identified in our June 
2010 report are the following. 

* Reported screening data. TSA does not have a mechanism to verify 
screening data--which are self-reported by industry representatives. 
In our June 2010 report, we recommended that TSA develop a mechanism 
to verify the accuracy of all screening data through random checks or 
other practical means.[Footnote 11] TSA partially concurred with our 
recommendation, and stated that verifying the accuracy of domestic 
screening data will continue to be a challenge because there is no 
means to cross-reference local screening logs--which include screening 
information on specific shipments--with screening reports submitted by 
air carriers to TSA that do not contain such information. Given that 
the agency uses these data to report to Congress its compliance with 
the screening mandate as it applies to domestic cargo, we continue to 
believe that verifying the accuracy of the screening data is important 
so that TSA will be better positioned to provide reasonable assurance 
that screening is being conducted at reported levels. 

* Screening technology. TSA has not approved or qualified any 
equipment to screen cargo transported on unit-load device (ULD) 
pallets or containers--both of which are common means of transporting 
air cargo on wide-body passenger aircraft--both domestic and inbound 
aircraft.[Footnote 12] Cargo transported on wide-body passenger 
aircraft makes up 76 percent of domestic air cargo shipments 
transported on passenger aircraft. The maximum size cargo 
configuration that may be screened is a 48-by-48-by-65-inch skid--much 
smaller than the large pallets that are typically transported on wide-
body passenger aircraft. Prior to May 1, 2010, canine screening was 
the only screening method, other than physical search, approved by TSA 
to screen such cargo configurations. However, effective May 1, 2010, 
the agency no longer allows canine teams to screen ULD pallets and 
containers given TSA concerns about the effectiveness of this 
screening method for those cargo configurations. In addition, TSA is 
working to complete qualification testing of additional air cargo 
screening technologies; thus, until all stages of qualification 
testing are concluded, the agency may not have reasonable assurance 
that the technologies that air carriers and program participants are 
currently allowed to use to screen air cargo are effective. TSA is 
conducting qualification testing to determine which screening 
technologies are effective at the same time that air carriers are 
using these technologies to meet the mandated requirement to screen 
air cargo transported on passenger aircraft. While we recognize that 
certain circumstances, such as mandated deadlines, require expedited 
deployment of technologies, our prior work has shown that programs 
with immature technologies have experienced significant cost and 
schedule growth.[Footnote 13] 

* Inspection resources. As we reported in June 2010, for domestic air 
cargo, TSA amended its inspections plan to include inspections of CCSP 
participants, but the agency had not completed its staffing study to 
determine how many inspectors will be necessary to provide oversight 
of the additional program participants that would support the 
screening mandate. In our June 2010 report, we recommended that TSA 
create milestones to help ensure completion of the staffing study. TSA 
concurred and stated that as part of the staffing study, the agency is 
working to develop a model to identify the number of required 
transportation security inspectors and that this effort would be 
completed in the fall of 2010. As of February 2011, TSA officials 
stated that the study was in the final stages of review. 

TSA Has Taken Steps to Enhance the Security of Inbound Air Cargo, but 
Previously Identified Screening Data Limitations and Other Challenges 
Persist: 

TSA has taken a number of steps to enhance the security of inbound air 
cargo, as discussed below. 

TSA moved its deadline for meeting the 100 percent screening mandate 
as it applies to inbound air cargo. TSA officials stated that they 
plan to meet the 9/11 Commission Act mandate as it applies to inbound 
air cargo transported on passenger aircraft by December 2011--2 years 
earlier than the TSA administrator reported to Congress in November 
2010. According to TSA officials, the agency determined it was 
feasible to require air carriers to meet a December 2011 screening 
deadline as a result of trends in carrier reported screening data and 
discussions with air cargo industry leaders regarding progress made by 
industry to secure inbound cargo on passenger aircraft. 

Effective May 1, 2010, air carriers were required to submit inbound 
screening data to TSA. According to TSA officials, in analyzing this 
self-reported screening data, TSA found that carriers were screening a 
higher percentage of air cargo than TSA had initially estimated. For 
example, TSA previously estimated that 65 percent of inbound cargo by 
weight would be screened by August 2010. Based on data submitted to 
TSA by the air carriers, TSA officials stated that the agency 
estimates that about 80 percent of inbound cargo by weight was 
screened for the same time period. In addition to requiring air 
carriers to submit screening data to TSA, in May 2010, TSA also 
required air carriers to screen a certain percentage of shrink-wrapped 
and banded inbound cargo.[Footnote 14] TSA officials stated that in 
implementing this requirement, air carriers determined that it was 
more efficient to screen larger groupings of cargo at the point of 
origin, which resulted in more than the required percentage being 
screened. Therefore, according to TSA officials, continued progress 
made by industry will help TSA to meet its December 31, 2011, deadline 
to screen 100 percent of inbound passenger cargo. 

TSA is working with foreign governments to draft international air 
cargo security standards and to harmonize standards with foreign 
partners.[Footnote 15] According to TSA officials, the agency has 
worked with foreign counterparts over the last 3 years to draft 
Amendment 12 to the International Civil Aviation Organization's (ICAO) 
Annex 17, and to generate support for its adoption by ICAO members. 
The amendment, which was adopted by the ICAO Council in November 2010, 
will set forth new standards related to air cargo such as requiring 
members to establish a system to secure the air cargo supply chain 
(the flow of goods from manufacturers to retailers). TSA has also 
supported the International Air Transport Association's (IATA) efforts 
to establish a secure supply chain approach to screening cargo for its 
member airlines and to have these standards recognized 
internationally. Moreover, following the October 2010 bomb attempt in 
cargo originating in Yemen, DHS and TSA, among other things, reached 
out to international partners, IATA, and the international shipping 
industry to emphasize the global nature of transportation security 
threats and the need to strengthen air cargo security through enhanced 
screening and preventative measures. TSA also deployed a team of 
security inspectors to Yemen to provide that country's government with 
assistance and guidance on their air cargo screening procedures. 

In November 2010, TSA officials stated that the agency is coordinating 
with foreign countries to evaluate the comparability of their air 
cargo security requirements with those of the United States. According 
to TSA officials, the agency has developed a program, the National 
Cargo Security Program (NCSP), that would recognize the air cargo 
security programs of foreign countries if TSA deems those programs 
provide a level of security commensurate with TSA's programs. TSA 
plans to coordinate with the top 20 air cargo volume countries, which, 
according to TSA officials, export about 90 percent of the air cargo 
transported to the United States on passenger aircraft. According to 
officials, TSA has completed a review of one country's air cargo 
security program and has determined that its requirements are 
commensurate with those of the United States. TSA considers air 
carriers adhering to NCSP approved programs as being in compliance 
with TSA air cargo security requirements, according to TSA officials. 
As of February 2011, TSA continues to evaluate the comparability of 
air cargo security programs for several other countries. TSA officials 
stated that although the December 31, 2011, deadline to achieve 100 
percent screening is independent of this effort, the agency plans to 
recognize as many commensurate programs as possible by the deadline. 

TSA implemented additional security measures following the October 
2010 Yemen air cargo bomb attempt. On November 8, 2010, DHS announced 
security measures in response to the Yemen incident. TSA banned cargo 
originating from Yemen and Somalia from transport into the United 
States; banned the transport of cargo deemed high risk on passenger 
aircraft; prohibited the transport of toner and ink cartridges 
weighing 16 ounces or more on passenger aircraft in carry-on and 
checked luggage; and required additional screening of high-risk cargo 
prior to transport on an all-cargo aircraft. In addition, TSA is 
working closely with CBP, industry and international partners to 
expedite the receipt of advanced cargo data for international flights 
to the United States prior to departure in order to more effectively 
identify and screen items based on risk and current intelligence. 
Further, in December 2010, TSA, CBP, and the air cargo industry 
launched a new joint technology pilot project referred to as the air 
cargo advance screening program to enhance the sharing of electronic 
shipping information to improve the identification of high-risk cargo. 
In February 2011, TSA officials stated that this effort is currently 
focused on all-cargo carriers and will expand to passenger carriers in 
the future. 

Even with these steps to improve the security of inbound air cargo, as 
we previously reported in June 2010, TSA faces challenges that could 
hinder its ability to meet the 9/11 Commission Act screening mandate 
as it applies to inbound cargo. 

TSA lacks a mechanism to verify data on screening conducted on inbound 
air cargo. As we reported in June 2010, questions exist about the 
reliability of TSA's reported screening data for inbound cargo because 
TSA does not have a mechanism to verify the accuracy of the data 
reported by industry. In June 2010, we reported that TSA's screening 
percentages were estimated based on screening requirements of certain 
countries and were not based on actual data collected from air 
carriers or other entities, such as foreign governments. In this 
report, we recommended that TSA develop a mechanism to verify the 
accuracy of all screening data through random checks or other 
practical means and obtain actual data on all inbound screening. TSA 
concurred in part with our recommendation and issued changes to air 
carriers' standard security programs that required air carriers to 
report inbound cargo screening data to TSA. However, these 
requirements apply to air carriers and the screening that they conduct 
or that may be conducted by a foreign government, but does not reflect 
screening conducted by other entities throughout the air cargo supply 
chain. As of March 2011, TSA officials stated that current screening 
percentages are based on actual data reported by air carriers, but 
stated that it is difficult to verify the accuracy of the screening 
data reported by air carriers. Given that TSA now plans to meet the 
9/11 Commission Act screening mandate as it applies to inbound air 
cargo by December 2011, it will be important for TSA to have complete 
and accurate data in hand to verify that this mandate is being met. 

TSA has limited authority to regulate foreign governments or entities. 
TSA may require that foreign air carriers with operations to, from, or 
within the United States comply with any applicable requirements, 
including TSA-issued emergency amendments to air carrier security 
programs, but foreign countries, as sovereign nations, generally 
cannot be compelled to implement specific aviation security standards 
or mutually accept other countries' security measures. International 
representatives have noted that national sovereignty concerns limit 
the influence the United States and its foreign partners can have in 
persuading any country to participate in international harmonization 
efforts, or make specific changes in their screening procedures. Thus, 
TSA authority abroad is generally limited to regulating air carrier 
operations, including the transport of cargo, into the United States. 
It has no other authority to require foreign governments or entities 
to, for example, screen a certain percentage of air cargo or screen 
cargo using specific procedures. 

No technology is currently approved or qualified by TSA to screen 
cargo once it is loaded onto a unit-load device. As we noted earlier 
for domestic air cargo, TSA has not approved any equipment to screen 
cargo transported on unit-load device (ULD) pallets or containers--
both of which are common means of transporting air cargo on wide-body 
passenger aircraft--on both domestic and inbound aircraft. As a 
result, questions remain about air carriers' ability to effectively 
and efficiently screen air cargo bound for the United States. This is 
particularly important because, as we reported in June 2010, about 96 
percent of inbound air cargo arrives on wide-body aircraft, and TSA 
has limited authority to oversee the screening activities of foreign 
governments or entities. We will be examining these issues as part of 
our ongoing review of TSA's efforts to secure inbound air cargo for 
the House Committee on Homeland Security and Senate Committee on 
Homeland Security and Governmental Affairs. We plan to issue the final 
results later this year. 

Mr. Chairman, this concludes my statement. I look forward to answering 
any questions that you or other members of the subcommittee may have. 

For questions about this statement, please contact Stephen M. Lord at 
(202) 512-4379 or lords@gao.gov. Contact points for our Offices of 
Congressional Relations and Public Affairs may be found on the last 
page of this statement. Individuals making key contributions to this 
testimony are Steve D. Morris, Assistant Director; Joel Aldape; 
Carissa Bryant; Labony Chakraborty; Tom Lombardi; Linda S. Miller; 
Rebecca Kuhlman Taylor; and Meg Ullengren. 

[End of section] 

Footnotes: 

[1] For the purposes of this statement, domestic cargo refers to cargo 
transported by air within the United States and from the United States 
to a foreign location by both U.S. and foreign air carriers, and 
inbound cargo refers to cargo transported by both U.S. and foreign air 
carriers from a foreign location to the United States. These cargo 
statistics were provided by the Transportation Security Administration 
from the Bureau of Transportation Statistics. 

[2] See Pub. L. No. 107-71, 115 Stat. 597 (2001). 

[3] See Pub. L. No. 107-71, § 110(b), 115 Stat. at 614-15 (codified as 
amended at 49 U.S.C. § 44901). 

[4] See 49 U.S.C. § 44901(f) (requiring the system to be in operation 
as soon as practicable after the date of enactment--November 19, 2001-
-but without establishing a firm deadline). 

[5] See Pub. L. No. 110-53, § 1602(a), 121 Stat. 266, 477-79 (2007) 
(codified at 49 U.S.C. § 44901(g)). 

[6] Although TSA is authorized to approve additional methods for 
screening air cargo beyond the physical examination or nonintrusive 
methods listed in the statute, the statute expressly prohibits the use 
of methods that rely solely on performing a review of information 
about the contents of cargo or verifying the identity of a shipper. 
See 49 U.S.C. § 44901(g)(5). 

[7] See GAO, Aviation Security: DHS Has Taken Steps to Enhance 
International Aviation Security and Facilitate Compliance with 
International Standards, but Challenges Remain, [hyperlink, 
http://www.gao.gov/products/GAO-11-238T] (Washington, D.C.: Dec. 2, 
2010); Aviation Security: Progress Made but Actions Needed to Address 
Challenges in Meeting the Air Cargo Screening Mandate, [hyperlink, 
http://www.gao.gov/products/GAO-10-880T] (Washington, D.C.: June 30, 
2010); Aviation Security: TSA Has Made Progress but Faces Challenges 
in Meeting the Statutory Mandate for Screening Air Cargo on Passenger 
Aircraft, [hyperlink, http://www.gao.gov/products/GAO-10-446] 
(Washington, D.C.: June 28, 2010); Homeland Security: Better Use of 
Terrorist Watchlist Information and Improvements in Deployment of 
Passenger Screening Checkpoint Technologies Could Further Strengthen 
Security, [hyperlink, http://www.gao.gov/products/GAO-10-401T] 
(Washington, D.C.: Jan. 27, 2010); Aviation Security: Foreign Airport 
Assessments and Air Carrier Inspections Help Enhance Security, but 
Oversight of These Efforts Can Be Strengthened, [hyperlink, 
http://www.gao.gov/products/GAO-07-729] (Washington, D.C.: May 11, 
2007); and Aviation Security: Federal Efforts to Secure U.S.-Bound Air 
Cargo Are in the Early Stages and Could Be Strengthened, [hyperlink, 
http://www.gao.gov/products/GAO-07-660] (Washington, D.C.: Apr. 30, 
2007). 

[8] There are 462 TSA-regulated airports in the United States. TSA 
classifies the airports it regulates into one of five categories (X, 
I, II, III, and IV) based on various factors, such as the total number 
of takeoffs and landings annually, the extent to which passengers are 
screened at the airport, and other special security considerations. In 
general, category X airports have the largest number of passenger 
boardings, and category IV airports have the smallest. 

[9] A freight forwarder is a company that consolidates cargo from 
multiple shippers onto a master air waybill--a manifest of the 
consolidated shipment--and delivers the shipment to air carriers for 
transport. For the purpose of this statement, the term freight 
forwarder only includes those freight forwarders that are regulated by 
TSA, also referred to as indirect air carriers. 

[10] Initially, the Air Cargo Screening Technology Pilot was limited 
to high-volume freight forwarders (i.e., freight forwarders processing 
at least 200 shipments annually per location that contain cargo 
consolidated from multiple shippers). However, in November 2008, TSA 
issued a second announcement seeking additional high-volume freight 
forwarders and independent cargo screening facilities to apply for the 
pilot. 

[11] [hyperlink, http://www.gao.gov/products/GAO-10-880T]. 

[12] Qualified technologies have undergone a TSA-sponsored test 
process. Approved technologies are conditionally approved for 
screening operations for a period of 36 months from the date added to 
the approved technology list while continuing to undergo further 
testing for qualification. 

[13] See GAO, Defense Acquisitions: Measuring the Value of DOD's 
Weapons Programs Requires Starting with Realistic Baselines, 
[hyperlink, http://www.gao.gov/products/GAO-09-543T] (Washington, 
D.C.: Apr. 1, 2009). 

[14] Details on TSA's screening requirements are Sensitive Security 
Information and are not discussed in this statement. Banded cargo is 
cargo with heavy-duty metal, plastic, or nylon bands that secure all 
sides of the cargo shipment or secure the cargo shipment to a skid. 

[15] Harmonization, as defined by DHS, refers to countries' efforts to 
coordinate their security standards and practices to enhance security 
as well as the mutual recognition and acceptance of existing security 
standards and practices aimed at achieving the same security outcome. 

[End of section] 

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