Refueling workhorse
A KC-135 Stratotanker deployed from the 157th Air Refueling Wing in New Hampshire, waits for visitors at the annual Flight Line Fest Jan. 10 at Al Udeid Air Base, Qatar. The KC-135 fleet at AUAB, the largest in the world, flew more than 100,000 combat hours in 2015. The KC-135 was one of five U.S. Air Force aircraft on display during the event. Flight Line Fest is a joint partnership between the 379th Air Expeditionary Wing and Qatar Emiri Air Force held to foster relations between Qatar and the United States. (U.S. Air Force photo by Tech. Sgt. James Hodgman/Released)