180915-F-VG386-1027
U.S. Air Force Capt. Ryan Nelson, left, and Maj. Matthew Boatman, 351st Air Refueling Squadron pilots, conduct pre-flight checks of a KC-135 Stratotanker prior to performing an air-refueling mission, at RAF Mildenhall, England, Sept. 15, 2018. The mission included the refueling of a B-52 Stratofortress from the 307th Bomb Wing at Barksdale, Louisiana, that is deployed to RAF Fairford, England. (U.S. Air Force photo by Senior Airman Luke Milano)