U.S. Air Force Staff Sgt. Paul Lowery, left, and Staff Sgt. Kevin Ludwig, right, 7th Component Maintenance Squadron, perform a foreign object debris check inside the engine test cell at Dyess Air Force Base, Texas, March 30, 2017. The engine test cell is used to function test engines that leave the B-1B Lancer engine back shop. (U.S. Air Force Senior Airman Alexander Guerrero)