Tech. Sgt. Rowland Thagard, 8th Maintenance Squadron assistant propulsion section chief, oversees Airmen during an engine test in a hush house at Kunsan Air Base, Republic of Korea, Dec. 9, 2015. In addition to the hush house, the 8th MXS maintenance flight encompasses multiple duty sections, which include a tire shop, aerospace propulsion, crash damage, aircraft recovery and phase. (U.S. Air Force photo by Staff Sgt. Nick Wilson/Released)