U.S. Air Force Senior Airman Terry Koonce, 633rd Logistics Readiness Squadron fuels distributor, pumps gas into a fuel truck at Langley Air Force Base, Va., Oct. 19, 2015. As a fuel Airman, Koonce tracks and stores petroleum products for use in Air Force vehicles and aircraft. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)