Tech. Sgt. Joshua Baker, 354th Maintenance Squadron propulsion flight test cell chief, inspects rivets on the walls of the “Hush House” after an engine test Oct. 3, 2013, Eielson Air Force Base, Alaska. The thrust of the engine being tested produces so much wind and turbulence that rivets have to be checked regularly to ensure the building doesn’t come apart. (U.S. Air Force photo by Senior Airman Shawn Nickel/Released)
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