TINKER AIR FORCE BASE, Okla. – Promotions from the 513th Air Control Group enlisted ranks are:MASTER SERGEANTKelly Higgins, 513th Operations Support SquadronChristopher Ritter, 513th Maintenance Squadron (STEP II)Joel Storts, 513th Maintenance SquadronTECHNICAL SERGEANTJackie Young, 970th Airborne