U.S. Air Force Lt. Gen. William H. Etter, passes the Continental U.S. North American Aerospace Defense Command Region flag to U.S. Army Gen. Charles H. Jacoby, NORAD commander, during the Continental U.S. North American Aerospace Defense Command Region-1st Air Force (Air Forces Northern) change of command ceremony at Tyndall Air Force Base, Fla., Mar. 7. Etter assumed command from Lt. Gen. Stanley E. Clarke. (U.S. Air Force photo by Lisa Norman)