GRISSOM AIR RESERVE BASE, Ind. -- Col. William T. "Tim" Cahoon and Staff Sgt. Tyler Greenbank pose for a photo as Sergeant Greenbank is inducted into the ranks of noncommissioned officers during a special ceremony held here during the November unit training assembly. Sergeant Greenbank, a aircrew flight equipment specialist with the 434th Operations Support Squadron, along with 18 other Grissom Airmen, was recognized for their promotions to staff sergeant during the ceremony. Colonel Cahoon is the 434th Air Refueling Wing commander. (U.S. Air Force photo/Senior Airman Carl Berry)
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