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Maj. Gen. Christopher P. Azzano (left) and Maj. Gen. Evan C. Dertien smile on stage as Gen. Arnold W. Bunch, Jr., Air Force Materiel Command commander, presides over the Air Force Test Center Change of Command Ceremony at Edwards Air Force Base, Calif., July 15, 2021. (U.S. Air Force Photo/Tech. Sgt. Robert Cloys)
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