LANGLEY AIR FORCE BASE, Va. – Lt. Col. DeWayne A. Nikkila assumes command of the 722d Air Control Squadron by accepting the guidon from Brig. Gen. Stephen W. Wilson, Canadian North American Aerospace Defense Region deputy commander, during the change of command ceremony in Ontario, Canada June 11. Lieutenant Colonel Nikkila assumed command from Lt. Col. David D. Johnson. (U.S. Air Force courtesy photo)