LANGLEY AIR FORCE BASE, Va. -- Lt. Col. James Mock, center, incoming 30th Intelligence Squadron commander, receives the squadron guidon from Col. Mark Cooter, left, 497th Intelligence, Surveillance and Reconnaissance Group commander, while outgoing commander Lt. Col. Brendan Harris, right, looks on at a change of command ceremony June 9 at the Bayside Enlisted Club. (U.S. Air Force photo/Tech. Sgt. Joshua Ward)