Ballistic Missile Defense:
Information on Theater High Altitude Area Defense (THAAD) System
NSIAD-94-107BR: Published: Jan 27, 1994. Publicly Released: Feb 17, 1994.
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Pursuant to a congressional request, GAO provided information on the Department of Defense's (DOD) Theater High Altitude Area Defense (THAAD) System, focusing on the: (1) expected cost, schedule, and acquisition quantities of THAAD; (2) expected role of THAAD within a National Missile Defense system; (3) relationship of range to peak reentry velocity for enemy ballistic missiles; and (4) ranges and types of ballistic missiles of developing countries.
GAO found that: (1) the estimated cost for THADD could total $14.5 billion; (2) DOD plans to procure 1,422 THAAD missiles, 99 launchers, and 18 radars; (3) the THAAD program is scheduled to begin engineering and manufacturing development in 1996 and low-rate initial production in 1999; (4) THAAD is intended to defend against medium- to long-range theater ballistic missiles and will contribute to the national theater missile defense system; (5) the peak reentry velocity of enemy missiles is directly proportional to their maximum range and increases as their range increases; (6) there are more than 30 types of theater ballistic missiles in operation or under development in developing countries; and (7) the number of countries that possess long-range theater missiles is expected to increase.
Oct 21, 2020
![defense icon, source: [West Covina, California] Progressive Management, 2008](https://www.gao.gov/images/rip/defense.jpg "defense icon, source: [West Covina, California] Progressive Management, 2008")
Missile Defense:
Observations on Ground-based Midcourse Defense Acquisition Challenges and Potential Contract Strategy ChangesGAO-21-135R: Published: Oct 21, 2020. Publicly Released: Oct 21, 2020.
Oct 7, 2020
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National Security:
Additional Actions Needed to Ensure Effectiveness of 5G StrategyGAO-21-155R: Published: Oct 7, 2020. Publicly Released: Oct 7, 2020.
Oct 1, 2020
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Army Modernization:
Army Should Improve Use of Alternative Agreements and Approaches by Enhancing Oversight and Communication of Lessons LearnedGAO-21-8: Published: Oct 1, 2020. Publicly Released: Oct 1, 2020.
Sep 23, 2020
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Nuclear Weapons:
NNSA Should Further Develop Cost, Schedule, and Risk Information for the W87-1 Warhead ProgramGAO-20-703: Published: Sep 9, 2020. Publicly Released: Sep 23, 2020.
Aug 20, 2020
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Navy Shipyards:
Actions Needed to Address the Main Factors Causing Maintenance Delays for Aircraft Carriers and SubmarinesGAO-20-588: Published: Aug 20, 2020. Publicly Released: Aug 20, 2020.
Aug 14, 2020
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GAO Audits Involving DOD:
Status of Efforts to Schedule and Hold Timely Entrance ConferencesGAO-20-690R: Published: Aug 14, 2020. Publicly Released: Aug 14, 2020.
Aug 6, 2020
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Defense Workforce:
DOD Needs to Assess Its Use of Term and Temporary AppointmentsGAO-20-532: Published: Aug 6, 2020. Publicly Released: Aug 6, 2020. -
Next Generation Combat Vehicles:
As Army Prioritizes Rapid Development, More Attention Needed to Provide Insight on Cost Estimates and Systems Engineering RisksGAO-20-579: Published: Aug 6, 2020. Publicly Released: Aug 6, 2020.
Jul 30, 2020
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National Nuclear Security Administration:
Information on the Fiscal Year 2021 Budget Request and Affordability of Nuclear Modernization ActivitiesGAO-20-573R: Published: Jul 30, 2020. Publicly Released: Jul 30, 2020.
Jul 27, 2020
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Climate Resilience:
Actions Needed to Ensure DOD Considers Climate Risks to Contractors as Part of Acquisition, Supply, and Risk AssessmentGAO-20-511: Published: Jun 25, 2020. Publicly Released: Jul 27, 2020.
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