DAVIS-MONTHAN AIR FORCE BASE, Ariz. -- An F-22 Raptor (left), F-15 Strike Eagle (second from left), F-15C (center), A-10 Thunderbolt II (second from right) and F-16 Fighting Falcon fly in formation March 8. The aircraft practice air show maneuvers during the Heritage Flight Conference held annually. (U.S. Air Force photo/Staff Sgt. Samuel Rogers)