Airman Mathew Thgeson, left, and Airman Ryan Hull, 362nd Training Squadron aircraft fundamentals course students, inspect an aircraft ground equipment generator at Sheppard Air Force Base, Texas, July 11, 2018.This unit is used to maintain and operate numerous aircraft, including the C-130 cargo turboprop, C-17 transport jets, C-5 heavy-lift transports, B-1B jet bombers, B-2 stealth bombers, F-22 advanced tactical jet fighters, F-35 joint strike fighters, A-10 ground-support jets, KC-135 mid-air refuelers, and B-52 bombers. (U.S. Air Force Photo by Senior Airman Kevin Clites)