U.S. Air Force  Capt. Greg Stack, a A-10 Thunderbolt II pilot assigned to the 354th Fighter Squadron Davis-Monthan AFB, Ariz., sits in his cockpit going through his checklist before takeoff in support of Angel Thunder in Tucson, Ariz., on Oct. 17, 2011. Approximately 1,400 U.S. military, federal and state employees and Coalition Forces are participating in the 6th Annual Angel Thunder Exercise in Tucson, Ariz. Angel Thunder is the world's largest military search and rescue exercise in the world.
Staff Sgt. Andy Kin
Taken on 17 October 2011
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