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Hush House contains engine roar
A Pratt and Whitney F119 engine performs an engine run at the 1st Maintenance Group propulsion flight Hush House at Langley Air Force Base, Va., July 22, 2015. The engine is connected to all electrical and mechanical propulsion systems as if it were installed in an aircraft, and is tested at maximum capability. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

Photo by: Senior Airman Kayla NewmanReleased |  VIRIN: 150722-F-KB808-110.JPG