363rd TRS armament course
Airman Charles Sapp, 363rd Training Squadron armament apprentice course student, disassembles the M61A1 gun system for inspection at Sheppard Air Force Base, Texas, Jan. 12, 2018. Sapp is in block 11 of 14 and scheduled to graduate Feb. 9. (U.S. Air Force photo by Alan R. Quevy)