Senior Master Sgt. John Wallman presents the 931st Air Refueling Group guidon during a change-of-command ceremony at McConnell Air Force Base, Kan, on July 2. Col. Jaime Crowhurst took command of the 22nd Air Refueling Wing, the 931st's host unit at the base, during the ceremony. Sergeant Wallman is a Reserve KC-135 Stratotanker boom operator assigned to the 18th Air Refueling Squadron, the flying unit of the 931st. (U.S. Air Force photo/Tech. Sgt. Jason Schaap)