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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 10:00 a.m. EDT:
Thursday, September 22, 2011: 

Homeland Security: 

DHS and TSA Acquisition and Development of New Technologies: 

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

GAO-11-957T: 

GAO Highlights: 

Highlights of GAO-11-957T, a testimony to the Subcommittee on 
Transportation Security, Committee on Homeland Security, House of 
Representatives. 

Why GAO Did This Study: 

Within the Department of Homeland Security (DHS), the Transportation 
Security Administration (TSA) is responsible for developing and 
acquiring new technologies to address homeland security needs. TSA’s 
acquisition programs represent billions of dollars in life-cycle costs 
and support a wide range of aviation security missions and investments 
including technologies used to screen passengers, checked baggage, and 
air cargo, among others. GAO’s testimony addresses three key 
challenges identified in past work: (1) developing technology program 
requirements, (2) overseeing and conducting testing of new 
technologies, and (3) incorporating information on costs and benefits 
in making technology acquisition decisions. This statement also 
addresses recent DHS efforts to strengthen its investment and 
acquisition processes. This statement is based on reports and 
testimonies GAO issued from October 2009 through September 2011 
related to TSA’s efforts to manage, test, and deploy various 
technology programs. 

What GAO Found: 

GAO’s past work has found that TSA has faced challenges in developing 
technology program requirements on a systemic and individual basis. 
Program performance cannot be accurately assessed without valid 
baseline requirements established at the program start. In June 2010, 
GAO reported that over half of the 15 DHS programs (including 3 TSA 
programs) GAO reviewed awarded contracts to initiate acquisition 
activities without component or department approval of documents 
essential to planning acquisitions, setting operational requirements, 
or establishing acquisition program baselines. At the program level, 
in July 2011, GAO reported that in 2010 TSA revised its explosive 
detection systems (EDS) requirements to better address current threats 
and plans to implement these requirements in a phased approach. 
However, GAO reported that some number of the EDSs in TSA’s fleet are 
configured to detect explosives at the levels established in the 2005 
requirements and TSA did not have a plan with time frames needed to 
deploy EDSs to meet the current requirements. 

GAO has also reported DHS and TSA challenges in overseeing and testing 
new technologies. For example, in July 2011, GAO reported that TSA 
experienced challenges in collecting data on the physical and chemical 
properties of certain explosives needed by vendors to develop EDS 
detection software and needed by TSA before procuring and deploying 
EDSs to airports. TSA and DHS Science and Technology Directorate have 
experienced these challenges because of problems associated with 
safely handling and consistently formulating some explosives. The 
challenges related to data collection for certain explosives have 
resulted in problems carrying out the EDS procurement as planned. In 
addition, in October 2009, GAO reported that TSA deployed explosives 
trace portals, a technology for detecting traces of explosives on 
passengers at airport checkpoints, in January 2006 even though TSA 
officials were aware that tests conducted during 2004 and 2005 on 
earlier models of the portals suggested the portals did not 
demonstrate reliable performance in an airport environment. In June 
2006, TSA halted deployment of the explosives trace portals because of 
performance problems and high installation costs. 

GAO’s prior work has shown that cost-benefit analyses help 
congressional and agency decision makers assess and prioritize 
resource investments and consider potentially more cost-effective 
alternatives, and that without this ability, agencies are at risk of 
experiencing cost overruns, missed deadlines, and performance 
shortfalls. GAO has reported that TSA has not consistently included 
these analyses in its acquisition decision making. 

In June 2011, DHS reported that it is taking steps to strengthen its 
investment and acquisition management processes by implementing a 
decision-making process at critical phases throughout the investment 
life cycle. The actions DHS reports taking to address the management 
of its acquisitions and the development of new technologies are 
positive steps and, if implemented effectively, could help the 
department address many of these challenges. 

What GAO Recommends: 

GAO is not making any new recommendations. In prior work, GAO made 
recommendations to address challenges related to deploying EDS to meet 
requirements, overseeing and conducting testing of new technologies, 
and incorporating information on costs and benefits in making 
technology acquisition decisions. DHS and TSA concurred and described 
actions underway to address the recommendations. 

[End of section] 

Chairman Rogers, Ranking Member Jackson Lee, and Members of the 
Subcommittee: 

I am pleased to be here today to discuss our past work examining the 
Transportation Security Administration's (TSA) progress and challenges 
in developing and acquiring new technologies to address homeland 
security needs. TSA acquisition programs represent billions of dollars 
in life-cycle costs and support a wide range of aviation security 
missions and investments including technologies used to screen 
passengers, checked baggage, and air cargo, among others. Within the 
Department of Homeland Security (DHS), the Science and Technology 
Directorate (S&T) has responsibility for coordinating and conducting 
basic and applied research, development, demonstration, testing, and 
evaluation activities relevant to DHS components, which also have 
responsibilities for developing, testing, acquiring, and deploying 
such technologies. For example, TSA is responsible for securing the 
nation's transportation systems and, with S&T, researching, 
developing, and deploying technologies to, for example, screen airline 
passengers and their property. 

In recent years, we have reported that DHS has experienced challenges 
in managing its multibillion-dollar acquisition efforts, including 
implementing technologies that did not meet intended requirements and 
were not appropriately tested and evaluated, and has not consistently 
included completed analyses of costs and benefits before technologies 
were implemented. 

My testimony today focuses on the key findings of our prior work 
related to TSA's efforts to acquire and deploy new technologies to 
address homeland security needs. Our past work has identified three 
key challenges: (1) developing technology program requirements, (2) 
overseeing and conducting testing of new technologies, and (3) 
incorporating information on costs and benefits in making technology 
acquisition decisions. This statement will also discuss recent DHS and 
TSA efforts to strengthen its investment and acquisition processes. 

This statement is based on reports and testimonies we issued from 
October 2009 through September 2011 related to TSA's efforts to 
manage, test, and deploy various technology programs.[Footnote 1] For 
our past work, we reviewed program schedules, planning documents, 
testing reports, and other acquisition documentation. For some of the 
programs we discuss in this testimony, we conducted site visits to a 
range of facilities, such as national laboratories, airports, and 
other locations to observe research, development, and testing efforts. 
We also conducted interviews with DHS component program managers and 
S&T officials to discuss issues related to individual programs. We 
conducted this work in accordance with generally accepted government 
auditing standards. More detailed information on the scope and 
methodology from our previous work can be found within each specific 
report. 

Background: 

The Aviation and Transportation Security Act (ATSA) established TSA as 
the federal agency with primary responsibility for securing the 
nation's civil aviation system, which includes the screening of all 
passenger and property transported from and within the United States 
by commercial passenger aircraft.[Footnote 2] In accordance with ATSA, 
all passengers, their accessible property, and their checked baggage 
are screened pursuant to TSA-established procedures at the 463 
airports presently regulated for security by TSA. These procedures 
generally provide, among other things, that passengers pass through 
security checkpoints where they and their identification documents, 
and accessible property, are checked by transportation security 
officers (TSO), other TSA employees, or by private-sector screeners 
under TSA's Screening Partnership Program.[Footnote 3] Airport 
operators, however, also have direct responsibility for implementing 
TSA security requirements such as those relating to perimeter security 
and access controls, in accordance with their approved security 
programs and other TSA direction. 

TSA relies upon multiple layers of security to deter, detect, and 
disrupt persons posing a potential risk to aviation security. These 
layers include behavior detection officers (BDOs), who examine 
passenger behaviors and appearances to identify passengers who might 
pose a potential security risk at TSA-regulated airports;[Footnote 4] 
travel document checkers, who examine tickets, passports, and other 
forms of identification; TSOs responsible for screening passengers and 
their carry-on baggage at passenger checkpoints, using x-ray 
equipment, magnetometers, Advanced Imaging Technology, and other 
devices; random employee screening; and checked-baggage screening 
systems.[Footnote 5] 

DHS's Science and Technology Directorate (S&T) and TSA have taken 
actions to coordinate and collaborate in their efforts to develop and 
deploy technologies for aviation security. For example, they entered 
into a 2006 memorandum of understanding for using S&T's Transportation 
Security Laboratory, and they established the Capstone Integrated 
Product Team for Explosives Prevention in 2006 to help DHS, TSA, and 
the U.S. Secret Service to, among other things, identify priorities 
for explosives prevention. 

DHS and TSA Have Experienced Challenges in Developing and Meeting Key 
Performance Requirements for Various Technologies: 

Our past work has found that technology program performance cannot be 
accurately assessed without valid baseline requirements established at 
the program start. Without the development, review, and approval of 
key acquisition documents, such as the mission need statement, 
agencies are at risk of having poorly defined requirements that can 
negatively affect program performance and contribute to increased 
costs.[Footnote 6] For example, in June 2010, we reported that over 
half of the 15 DHS programs we reviewed awarded contracts to initiate 
acquisition activities without component or department approval of 
documents essential to planning acquisitions, setting operational 
requirements, or establishing acquisition program baselines.[Footnote 
7] For example, TSA's Electronic Baggage Screening Program did not 
have a department-approved program baseline or program requirements, 
but TSA is acquiring and deploying next-generation explosive detection 
technology to replace legacy systems. We made a number of 
recommendations to help address issues related to these procurements 
as discussed below. DHS has generally agreed with these 
recommendations and, to varying degrees, has taken actions to address 
them. 

In addition, our past work has found that TSA faces challenges in 
identifying and meeting program requirements in a number of its 
programs. For example: 

* In July 2011, we reported that TSA revised its explosive detection 
system (EDS) requirements to better address current threats and plans 
to implement these requirements in a phased approach.[Footnote 8] 
However, we reported that some number of the EDSs in TSA's fleet are 
configured to detect explosives at the levels established in the 2005 
requirements. The remaining EDSs are configured to detect explosives 
at 1998 levels. When TSA established the 2005 requirements, it did not 
have a plan with the appropriate time frames needed to deploy EDSs to 
meet the requirements. To help ensure that EDSs are operating most 
effectively, we recommended that TSA develop a plan to deploy and 
operate EDSs to meet the most recent requirements to ensure new and 
currently deployed EDSs are operated at the levels in established 
requirements.[Footnote 9] DHS concurred with our recommendation and 
has begun taking action to address them; for example, DHS reported 
that TSA has developed a plan to evaluate its current fleet of EDSs to 
determine the extent to which they comply with these requirements. 
However, our recommendation is intended to ensure that TSA operate all 
EDSs at airports at the most recent requirements. Until TSA develops a 
plan identifying how it will approach the upgrades for currently 
deployed EDSs--and the plan includes such items as estimated costs and 
the number of machines that can be upgraded--it will be difficult for 
TSA to provide reasonable assurance that its upgrade approach is 
feasible or cost-effective. Further, while TSA's efforts are positive 
steps, it is too early to assess their effect or whether they address 
our recommendation. 

* In October 2009, we reported that TSA passenger screening checkpoint 
technologies were delayed because TSA had not consistently 
communicated clear requirements for testing the technologies.[Footnote 
10] We recommended that TSA evaluate whether current passenger 
screening procedures should be revised to require the use of 
appropriate screening procedures until TSA determined that existing 
emerging technologies meet their functional requirements in an 
operational environment. TSA agreed with this recommendation. However, 
communications issues with the business community persist. In July 
2011, we reported that vendors for checked-baggage screening 
technology expressed concerns about the extent to which TSA 
communicated with the business community about the current EDS 
procurement.[Footnote 11] TSA agreed with our July 2011 recommendation 
to establish a process to communicate information regarding TSA's EDS 
acquisition to EDS vendors in a timely manner and reported taking 
actions to address it such as soliciting more feedback from vendors 
through kickoff meetings, industry days, and classified discussions of 
program requirements. 

DHS and TSA Have Encountered Challenges in Overseeing and Testing New 
Technologies: 

Our prior work has also shown that not resolving problems discovered 
during testing can sometimes lead to costly redesign and rework at a 
later date. Addressing such problems before moving to the acquisition 
phase can help agencies better manage costs. Specifically: 

* In June 2011 we reported that S&T's Test & Evaluation and Standards 
Office, responsible for overseeing test and evaluation of DHS's major 
acquisition programs, reviewed or approved test and evaluation 
documents and plans for programs undergoing testing, and conducted 
independent assessments for the programs that completed operational 
testing.[Footnote 12] DHS senior-level officials considered the 
office's assessments and input in deciding whether programs were ready 
to proceed to the next acquisition phase. However, the office did not 
consistently document its review and approval of components' test 
agents--a government entity or independent contractor carrying out 
independent operational testing for a major acquisition. In addition, 
the office did not document its review of other component acquisition 
documents, such as those establishing programs' operational 
requirements. We recommended, among other things, that S&T develop 
mechanisms to document its review of component acquisition 
documentation. DHS concurred and reported actions underway to address 
them. 

* In July 2011, we reported that TSA experienced challenges in 
collecting explosives data on the physical and chemical properties of 
certain explosives needed by vendors to develop EDS detection 
software.[Footnote 13] These data are also needed by TSA for testing 
the machines to determine whether they meet established requirements 
prior to their procurement and deployment to airports. TSA and S&T 
have experienced these challenges because of problems associated with 
safely handling and consistently formulating some explosives. The 
challenges related to data collection for certain explosives have 
resulted in problems carrying out the EDS procurement as planned. 
Specifically, attempting to collect data for certain explosives while 
simultaneously pursuing the EDS procurement delayed the EDS 
acquisition schedule. We recommended that TSA develop a plan to ensure 
that TSA has the explosives data needed for each of the planned phases 
of the 2010 EDS requirements before starting the procurement process 
for new EDSs or upgrades included in each applicable phase. DHS stated 
that TSA modified its strategy for the EDS's competitive procurement 
in July 2010 in response to the challenges in working with the 
explosives for data collection by removing the data collection from 
the procurement process. While TSA's plan to separate the data 
collection from the procurement process is a positive step, we feel, 
to fully address our recommendation, a plan is needed to establish a 
process for ensuring that data are available before starting the 
procurement process for new EDSs or upgrades for each applicable phase. 

* In July 2011, we also reported that TSA revised EDS explosives 
detection requirements in January 2010 to better address current 
threats and plans to implement these requirements in a phased 
approach. TSA had previously revised the EDS requirements in 2005 
though it did not begin operating EDS to meet the 2005 requirements 
until 2009. Further, TSA deployed a number of EDSs that had the 
software necessary to meet the 2005 requirements, but because the 
software was not activated, these EDSs were still detecting explosives 
at levels established before TSA revised the requirements in 2005. TSA 
officials stated that prior to activating the software in these EDSs, 
they must conduct testing to compare the false-alarm rates for 
machines operating at one level of requirements to those operating at 
another level of requirements. According to TSA officials, the results 
of this testing would allow them to determine if additional staff are 
needed at airports to help resolve false alarms once the EDSs are 
configured to operate at a certain level of requirements. TSA 
officials told us that they plan to perform this testing as a part of 
the current EDS acquisition. 

* In October 2009, we reported that TSA deployed explosives trace 
portals, a technology for detecting traces of explosives on passengers 
at airport checkpoints, in January 2006 even though TSA officials were 
aware that tests conducted during 2004 and 2005 on earlier models of 
the portals suggested the portals did not demonstrate reliable 
performance in an airport environment.[Footnote 14] TSA also lacked 
assurance that the portals would meet functional requirements in 
airports within estimated costs and the machines were more expensive 
to install and maintain than expected. In June 2006, TSA halted 
deployment of the explosives trace portals because of performance 
problems and high installation costs. We recommended that to the 
extent feasible, TSA ensure that tests are completed before deploying 
checkpoint screening technologies to airports. DHS concurred with the 
recommendation and has taken action to address it, such as requiring 
more-recent technologies to complete both laboratory and operational 
tests prior to deployment. For example, TSA officials stated that, 
unlike the explosive trace portal, operational testing for the 
Advanced Imaging Technology (AIT) was successfully completed late in 
2009 before its deployment was fully initiated. We are currently 
evaluating the testing conducted on AIT as part of an ongoing review. 

TSA Has Not Consistently Incorporated Information on Costs and 
Benefits in Making Acquisition Decisions: 

According to the National Infrastructure Protection Plan, security 
strategies should be informed by, among other things, a risk 
assessment that includes threat, vulnerability, and consequence 
assessments, information such as cost-benefit analyses to prioritize 
investments, and performance measures to assess the extent to which a 
strategy reduces or mitigates the risk of terrorist attacks.[Footnote 
15] Our prior work has shown that cost-benefit analyses help 
congressional and agency decision makers assess and prioritize 
resource investments and consider potentially more cost-effective 
alternatives, and that without this ability, agencies are at risk of 
experiencing cost overruns, missed deadlines, and performance 
shortfalls. For example, we have reported that TSA has not 
consistently included these analyses in its acquisition decision 
making. Specifically: 

* In October 2009, we reported that TSA had not yet completed a cost- 
benefit analysis to prioritize and fund its technology investments for 
screening passengers at airport checkpoints.[Footnote 16] One reason 
that TSA had difficulty developing a cost-benefit analysis was that it 
had not yet developed life-cycle cost estimates for its various 
screening technologies. We reported that this information was 
important because it would help decision makers determine, given the 
cost of various technologies, which technology provided the greatest 
mitigation of risk for the resources that were available. We 
recommended that TSA develop a cost-benefit analysis. TSA agreed with 
this recommendation and has completed a life-cycle cost estimate, but 
has not yet completed a cost-benefit analysis. 

* In March 2010, we reported that TSA had not conducted a cost-benefit 
analysis to guide the initial AIT deployment strategy.[Footnote 17] 
Such an analysis would help inform TSA's judgment about the optimal 
deployment strategy for the AITs, as well as provide information to 
inform the best path forward, considering all elements of the 
screening system, for addressing the vulnerability identified by the 
attempted December 25, 2009, terrorist attack. We recommended that TSA 
conduct a cost-benefit analysis. TSA completed a cost-effectiveness 
analysis in June 2011 and provided it to us in August 2011. We are 
currently evaluating this analysis as part of our ongoing AIT review. 

DHS Has Efforts Underway to Strengthen Acquisition and Technology 
Development: 

Since DHS's inception in 2003, we have designated implementing and 
transforming DHS as high risk because DHS had to transform 22 
agencies--several with major management challenges--into one 
department. This high-risk area includes challenges in strengthening 
DHS's management functions, including acquisitions; the effect of 
those challenges on DHS's mission implementation; and challenges in 
integrating management functions within and across the department and 
its components. Failure to effectively address DHS's management and 
mission risks could have serious consequences for U.S. national and 
economic security.[Footnote 18] 

In part because of the problems we have highlighted in DHS's 
acquisition process, implementing and transforming DHS has remained on 
our high-risk list. DHS currently has several plans and efforts 
underway to address the high-risk designation as well as the more 
specific challenges related to acquisition, technology development, 
and program implementation that we have previously identified. 

In June 2011, DHS reported to us that it is taking steps to strengthen 
its investment and acquisition management processes across the 
department by implementing a decision-making process at critical 
phases throughout the investment life cycle.[Footnote 19] For example, 
DHS reported that it plans to establish a new model for managing 
departmentwide investments across their life cycles. Under this plan, 
S&T would be involved in each phase of the investment life cycle and 
participate in new councils and boards DHS is planning to create to 
help ensure that test and evaluation methods are appropriately 
considered as part of DHS's overall research and development 
investment strategies. According to DHS, S&T will help ensure that new 
technologies are properly scoped, developed, and tested before being 
implemented. DHS also reports that it is working with components to 
improve the quality and accuracy of cost estimates and has increased 
its staff during fiscal year 2011 to develop independent cost 
estimates, a GAO best practice, to ensure the accuracy and credibility 
of program costs.[Footnote 20] DHS reports that four cost estimates 
for level 1 programs have been validated to date, but did not 
explicitly identify whether any of the Life Cycle Cost Estimates were 
for TSA programs.[Footnote 21] 

The actions DHS reports taking or has underway to address the 
management of its acquisitions and the development of new technologies 
are positive steps and, if implemented effectively, could help the 
department address many of these challenges. However, showing 
demonstrable progress in executing these plans is key. In the past, 
DHS has not effectively implemented its acquisition policies, in part 
because it lacked the oversight capacity necessary to manage its 
growing portfolio of major acquisition programs. Since DHS has only 
recently initiated these actions, it is too early to fully assess 
their effect on the challenges that we have identified in our past 
work. Going forward, we believe DHS will need to demonstrate 
measurable, sustainable progress in effectively implementing these 
actions. 

Chairman Rogers, Ranking Member Jackson Lee, and Members of the 
Subcommittee, this concludes my prepared statement. I would be pleased 
to respond to any questions that you or other members of the 
subcommittee may have. 

GAO Contact and Staff Acknowledgments: 

For questions about this statement, please contact Steve 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 David M. Bruno, Assistant Director; Robert Lowthian; 
Scott Behen; Ryan Consaul; Tom Lombardi; Bill Russell; Nate 
Tranquilli; and Julie Silvers. 

Key contributors for the previous work that this testimony is based on 
are listed within each individual product. 

[End of section] 

Related GAO Products: 

Aviation Security: TSA Has Made Progress, but Additional Efforts Are 
Needed to Improve Security. [hyperlink, 
http://www.gao.gov/products/GAO-11-938T]. Washington, D.C.: September 
16, 2011. 

Department of Homeland Security: Progress Made and Work Remaining in 
Implementing Homeland Security Missions 10 Years after 9/11. 
[hyperlink, http://www.gao.gov/products/GAO-11-881]. Washington, D.C.: 
September 7, 2011. 

Homeland Security: DHS Could Strengthen Acquisitions and Development 
of New Technologies. [hyperlink, 
http://www.gao.gov/products/GAO-11-829T]. Washington, D.C.: July 15, 
2011. 

Aviation Security: TSA Has Taken Actions to Improve Security, but 
Additional Efforts Remain. [hyperlink, 
http://www.gao.gov/products/GAO-11-807T]. Washington, D.C.: July 13, 
2011. 

Aviation Security: TSA Has Enhanced Its Explosives Detection 
Requirements for Checked Baggage, but Additional Screening Actions Are 
Needed. [hyperlink, http://www.gao.gov/products/GAO-11-740]. 
Washington, D.C.: July 11, 2011. 

Homeland Security: Improvements in Managing Research and Development 
Could Help Reduce Inefficiencies and Costs. [hyperlink, 
http://www.gao.gov/products/GAO-11-464T]. Washington D.C.: March 15, 
2011. 

High-Risk Series: An Update. [hyperlink, 
http://www.gao.gov/products/GAO-11-278]. Washington D.C.: February 16, 
2011. 

Department of Homeland Security: Assessments of Selected Complex 
Acquisitions. [hyperlink, http://www.gao.gov/products/GAO-10-588SP]. 
Washington, D.C.: June 30, 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 Is Increasing Procurement and Deployment of 
Advanced Imaging Technology, but Challenges to This Effort and Other 
Areas of Aviation Security Remain. [hyperlink, 
http://www.gao.gov/products/GAO-10-484T]. Washington, D.C.: March 17, 
2010. 

Aviation Security: DHS and TSA Have Researched, Developed, and Begun 
Deploying Passenger Checkpoint Screening Technologies, but Continue to 
Face Challenges. [hyperlink, http://www.gao.gov/products/GAO-10-128]. 
Washington, D.C.: October 7, 2009. 

[End of section] 

Footnotes: 

[1] See the related products list at the end of this statement. 

[2] See Pub. L. No. 107-71, 115 Stat. 597 (2001). For purposes of this 
testimony, "commercial passenger aircraft" refers to a U.S. or foreign-
based air carrier operating under TSA-approved security programs with 
regularly scheduled passenger operations to or from a U.S. airport. 

[3] Private-sector screeners under contract to and overseen by TSA, 
and not TSOs, perform screening activities at the 16 airports 
participating in TSA's Screening Partnership Program as of July 2011. 
See 49 U.S.C. § 44920. 

[4] TSA designed the Screening Passengers by Observation Techniques 
program to provide BDOs with a means of identifying persons who may 
pose a potential security risk at TSA-regulated airports by focusing 
on behaviors and appearances that deviate from an established baseline 
and that may be indicative of stress, fear, or deception. 

[5] Advanced Imaging Technology screens passengers for metallic and 
nonmetallic threats including weapons, explosives, and other objects 
concealed under layers of clothing. 

[6] The mission need statement outlines the specific functional 
capabilities required to accomplish DHS's mission and objectives, 
along with deficiencies and gaps in these capabilities. 

[7] GAO, Department of Homeland Security: Assessments of Selected 
Complex Acquisitions, [hyperlink, 
http://www.gao.gov/products/GAO-10-588SP] (Washington, D.C.: June 30, 
2010). Three of 15 were TSA programs. 

[8] GAO, Aviation Security: TSA Has Enhanced Its Explosives Detection 
Requirements for Checked Baggage, but Additional Screening Actions Are 
Needed, [hyperlink, http://www.gao.gov/products/GAO-11-740] 
(Washington, D.C.: July 11, 2011). 

[9] [hyperlink, http://www.gao.gov/products/GAO-11-740]. An EDS 
machine uses computed tomography technology to automatically measure 
the physical characteristics of objects in baggage. The system 
automatically triggers an alarm when objects that exhibit the physical 
characteristics of explosives are detected. 

[10] GAO, Aviation Security: DHS and TSA Have Researched, Developed, 
and Begun Deploying Passenger Checkpoint Screening Technologies, but 
Continue to Face Challenges, [hyperlink, 
http://www.gao.gov/products/GAO-10-128] (Washington, D.C.: Oct. 7, 
2009). 

[11] [hyperlink, http://www.gao.gov/products/GAO-11-740]. 

[12] GAO, DHS Science and Technology: Additional Steps Needed to 
Ensure Test and Evaluation Requirements Are Met. [hyperlink, 
http://www.gao.gov/products/GAO-11-596]. (Washington, D.C.: June 15, 
2011) 

[13] [hyperlink, http://www.gao.gov/products/GAO-11-740]. 

[14] [hyperlink, http://www.gao.gov/products/GAO-10-128]. 

[15] DHS, National Infrastructure Protection Plan (Washington, D.C.: 
June 2006). In 2009, DHS issued an updated plan that replaced the one 
issued in 2006. 

[16] [hyperlink, http://www.gao.gov/products/GAO-10-128]. 

[17] [hyperlink, http://www.gao.gov/products/GAO-10-484T]. 

[18] GAO, High Risk Series: An Update, [hyperlink, 
http://www.gao.gov/products/GAO-11-278] (Washington, D.C.: February 
2011). 

[19] [hyperlink, http://www.gao.gov/products/GAO-10-588SP]. 

[20] GAO, GAO Cost Estimating and Assessment Guide: Best Practices for 
Developing and Managing Capital Program Costs, [hyperlink, 
http://www.gao.gov/products/GAO-09-3SP] (Washington, D.C.: Mar. 2, 
2009). 

[21] Level 1 programs are those that have estimated life-cycle costs 
in excess of $1 billion and are reviewed at the department level. 

[End of section] 

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