GRISSOM AIR RESERVE BASE, Ind. -- Col. William T. "Tim" Cahoon presents Master Sgt. John E. Bitzel, Jr., with a certificate of promotion as he is inducted into the senior noncommissioned officer ranks during the November unit training assembly. Sergeant Bitzel is a combat crew communications specialist with the 434th Operations Support Squadron. Colonel Cahoon is the 434th Air Refueling Wing commander. (U.S. Air Force photo/Senior Airman Carl Berry)
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