U.S. Senior Airman Matthew Lusher, 660th Aircraft Maintenance Squadron in-flight crew chief, trouble shoots equipment during a KC-10 Extender flight over the Atlantic Ocean June 30, 2016. During this flight the KC-10 made history as the first to refuel F-35A Lightning II’s over across two continents. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)