Crew chiefs assigned to the 319th Aircraft Maintenance Squadron, pull chocks beside an RQ-4 Global Hawk as it’s towed across the flight line during an exercise on Grand Forks Air Force Base, N.D., Aug. 19, 2021. The primary goal of this exercise was to accelerate change in the RQ-4 enterprise and to prove the Global Hawks can meet demands of the Agile Concept Employment concept for future operations. (U.S. Air Force photo by Airman 1st Class Ashley Richards)
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