Staff Sgt. Nathaniel Calvert, 36th Aircraft Maintenance Unit weapons load crew member, takes a written examination during the 4th quarter load crew competition Jan 20, 2012 at Osan Air Base. The competition is comprised of a dress and appearance inspection, written exam, policies and procedures, and a load competition. Loaders from the 25th AMU loaded munitions onto an A-10 Thunderbolt II and the 36th AMU loaded an F-16 Fighting Falcon during the competition. (U.S. Air Force photo/Staff Sgt. Stefanie Torres)