Lt. Col. (Dr.) Alvin Bradford accepts the guideon from the 507th Air Refueling Wing Commander, Col. Miles Heaslip, during the 507th Medical Squadron assumption of command ceremony at Tinker Air Force Base, Oklahoma, Feb. 9, 2019. Prior to assuming command, Bradford served as the Chief of Aerospace Medicine in the 507th MDS. (U.S. Air Force photo by Master Sgt. Grady Epperly)