Maj. Gen. Randall Ogden, Fourth Air Force commander, accepts the 507th Air Refueling Wing flag from Col. Douglas Gullion, former 507th ARW commander, during a change of command ceremony June 3, 2018, at Tinker Air Force Base, Okla. Gullion served as commander of the 507th ARW for two years. (U.S. Air Force photo/Tech. Sgt. Samantha Mathison)