325th OSS changes command Published May 29, 2013 By Senior Airman Christopher Reel 325th Fighter Wing Public Affairs TYNDALL AIR FORCE BASE, Fla. -- Col. Charles Corcoran, 325th Operations Group commander, passes the 325th Operations Support Squadron guidon to Lt. Col. Clayton Bartels during a change of command ceremony May 23. Colonel Bartels replaces Lt. Col. David O'Malley who departs Tyndall to attend Air War College at Maxwell Air Force Base, Ala. Colonel Bartels was previously the 325th OSS director of operations.