Weapon Systems Annual Assessment Knowledge Gaps Pose Risk to Sustaining Recent Positive Trends (GAO-18-360SP)

Chris Durbin, Assistant Director

J. Andrew Walker, Senior Defense Analyst

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May 2018

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Sources: (Left to Right) Patriot Advanced Capability-3 Missile Segment Enhancement, U.S. Army; VH-92A Presidential Helicopter

Replacement, 2016 Sikorsky Aircraft Corporation, a Lockheed Martin Company; Next Generation Operational Control System, U.S.

Air Force; and F-35 Lightning II, 2016 Lockheed Martin.

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