U.S. Air Force Airman 1st Class Mario Reyes, 1st Aircraft Maintenance Squadron assistant dedicated crew chief, services the systems of aircraft at Joint Base Langley-Eustis, Va., Sept. 30, 2016. The exercise was supported by numerous organizations across the 633d Air Base Wing, 1st and 192nd Fighter Wings, to improve combat readiness and efficiencies. (U.S. Air Force photo by Airman 1st Class Tristan Biese)