Airman 1st Class Clayton Callison conducts a pre-flight checklist with an A-10 Thunderbolt II pilot on Monday, April 3, 2006, at Davis-Monthan Air Force Base, Ariz. Airman Callison is a crew chief with the 355th Aircraft Maintenance Squadron. (U.S. Air Force photo/Staff Sgt. Lanie McNeal)
Added On | 14th September 2015 |
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