Air Refueling
A B-52 Stratofortress closes in on the refueling boom of a KC-135 Stratotanker assigned to McConnell Air Force Base, Kan., during an air refueling exercise, July 17, 2014. The KC-135 was operated by an aircrew made up of Air Force Reservists from the 18th Air Refueling Squadron, 931st Air Refueling Group, at McConnell. Air refueling exercises are conducted regularly in order for aircrews to maintain proficiency. (U.S. Air Force photo by Senior Master Sgt. Ray Lewis)