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U.S. Air Force maintenance Airmen from the 556thTest and Evaluation Squadron perform a warm refuel test, where the aircraft is grounded and refueled while powered on but with the engine not running, at Creech Air Force Base, Nevada, Sept. 2, 2021. The warm refuel test was conducted to test if the operation can be accomplished in austere locations. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)
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