Five E-3 Sentry and two U.S. Navy E-6B Mercury gear up to return home while at Davis-Monthan Air Force Base, Ariz., May 21, 2013. The aircraft, from Tinker AFB, Okla., were diverted to D-M, May 20, 2013, when a tornado destroyed a town approximately three miles south of Tinker raising concerns for the safety of the aircraft. (U.S. Air Force photo by Airman 1st Class Betty R. Chevalier)