Col. Douglas E. Gullion, 507th Air Refueling Wing commander, addresses the wing as former commander, Col. Brian S. Davis, looks on at the wing change of command ceremony April 2, 2016, at Tinker Air Force Base. Gullion took command of the wing after serving as the 507th Operations Group commander, and now will lead the 1,110 Airmen in the 507th ARW, the largest Reserve flying unit in the state of Oklahoma. (U.S. Air Force photo/Maj. Jon Quinlan)

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Photo by: Maj. Jon Quinlan |  VIRIN: 160402-F-VM627-001.JPG