Col. William Mason and Maj. Gen. Mark Kyle, 4th Air Force commander, pose for a picture as Mason assumes command of the 459th Air Refueling Wing during a change of command ceremony, July 15, 2012. Mason is joining the 459 ARW from the 931st Air Refueling Group at McConnell Air Force Base, Kan. (U.S. Air Force photo/ Senior Airman Katie Spencer)