Master Sgt. George Hall operates the boom controls as an A-10 Thunderbolt II maneuvers in to receive fuel from a KC-135 Stratotanker during an aerial refueling mission, July 21, 2011. Both aircraft are assigned to the 127th Wing of the Michigan Air National Guard and are based at Selfridge Air National Guard Base, Mich. (USAF photo by John S. Swanson)