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The Hon. Ellen Lord, under secretary of defense for acquisition and sustainment, speaks with Scott Tope, 76th Propulsion Maintenance Group Engine Test Support Section chief, while touring a T-9 Engine Test Cell at Tinker Air Force Base, Oklahoma, Aug. 18, 2020. The “Cannon” engine test cell is one of four units that have been relocated to Tinker AFB from various Air Force bases around the world. (U.S. Air Force photo by Paul Shirk)
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