GRISSOM AIR RESERVE BASE, Ind., -- Col. William Mason, left, presents the 434th Operations Support Squadron guidon to Lt. Col. Larry Shaw as he takes command of the unit during a special ceremony held here March 5. Colonel Mason, 434th Operations Group commander, presided over the ceremony, which is steeped in military tradition and aimed allowing a unit's troops to witness a command transition. Colonel Shaw took over for Lt. Col. Todd Moody, who is now serving as the 74th Air Refueling Squadron operations officer. (U.S. Air Force photo/Capt. Kelly Howard)