Tinker Air Force Base, Okla. – Effective April 1st, promotions from the 507th Air Refueling Wing enlisted ranks are:MASTER SERGEANTMadison Harmon, 730th Air Mobility Training SquadronTECHNICAL SERGEANTMatthew Boyle, 513th Aircraft Maintenance SquadronGeorge McCain, 507th Force Support SquadronSTAFF