US Air Force Lt. Col. Charles Hainline, an F-4 Phantom fighter pilot from Holloman Air Force Base, N.M., and Lt. Col. Michael Shower, an F-22A Raptor fighter pilot from Langley Air Force Base, Va., fly in formation over Tucson, Ariz., during the Air Combat Command Heritage Conference at Davis-Monthan Air Force Base, on March 4, 2006. (US Air Force photo/ Tech. Sgt. Ben Bloker) (Released)