AIR REFUELING U.S. Air Force Tech. Sgt. Christie Tetley prepares a KC-135 Stratotanker to participate in an air refueling training mission with a B-52 Stratofortress over the Pacific Ocean near Andersen Air Force Base, Guam, Jan. 19, 2015. Tetley is a boom operator assigned to the 157th Air Refueling Wing. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 173342-Q-OKY64-468.jpg Photo Gallery