Airman Deilanni Parrilla-Reinate, a 363rd Training Squadron student, clears the gun on an F-16 in preparation for maintenance during class at Sheppard Air Force Base, Texas, Nov. 17. Parrilla-Reinate is in block 11 of 12 of the F-16 Armament course. (U.S. Air Force photo by Alan R. Quevy)