Senior Airman Matthew McFarlan, 28th Aircraft Maintenance Squadron B-1 bomber crew chief, detaches a fuel hose after hotpit refueling a B-1 from Dyess Air Force Base, Texas on the flightline at Ellsworth AFB, S.D., May 31, 2013. Hot pit refueling, usually performed in a combat environment, is a carefully controlled process during which two engines continue running, reducing maintenance down time for the aircraft. (U.S. Air Force photo by Senior Airman Kate Maurer/Released)