USAPAT Soldiers provide constant quality service
U.S. Army Staff Sgt. John Stefanik prepares to perform a pre-flight check on a C-37 Gulfstream July 16, 2015 on Joint Base Andrews, Md. The check includes various critical systems such as hydraulics, flight controls and electronics. (U.S. Air Force photo by Senior Airman Preston Webb/RELEASED)

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Photo by: Senior Airman Preston WebbReleased |  VIRIN: 150715-F-DL987-014.JPG