U.S. Air Force Staff Sgt. Jason O’Malley, 25th Aircraft Maintenance Unit 1-man, performs flight checks on an A-10 Thunderbolt II during a quarterly 51st Maintenance Group weapons load competition at Osan Air Base, Republic of Korea, July 7, 2017. Load crews who performed well in their monthly proficiency loads and quarterly evaluations were chosen to compete in the competition. (U.S. Air Force photo by Airman 1st Class Gwendalyn Smith)