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U.S. Air Force Senior Airman Nathan Hiesterman, 6th Aircraft Maintenance Squadron aerospace propulsion journeyman, attaches a chain hoist to a dynamometer at MacDill Air Force Base, Fla., Nov. 8, 2018. Dynamometers measure the amount of weight on the engine trailer when reattaching an engine to an aircraft. (U.S. Air Force photo by Airman 1st Class Scott Warner)
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