Crew chiefs assigned to the 319th Aircraft Maintenance Squadron perform an intake and exhaust inspection on an RQ-4 Global Hawk at Grand Forks Air Force Base, N.D., Sept. 22, 2020. Crew chiefs are certified annually on their ability to perform certain tasks, to include towing the aircraft, running the engine and performing intake and exhaust inspections. (U.S. Air Force photo by Senior Airman Elora J. McCutcheon)
FE 24-105mm F4 G OSS
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