Weapons load crew members from the 61st Aircraft Maintenance Unit, 309th AMU, 310th AMU, and the 425th AMU compete during the 4th quarter weapon's loading competition Dec. 18 at Luke Air Force Base, Ariz. This quarter featured the first time the F-35 was used in the competition against the F-16 Fighting Falcon at Luke. (U.S. Air Force photo by Staff Sgt. Staci Miller)