Airman 1st Class Bryant Vides-Perlera, crew chief assigned to the 319th Aircraft Maintenance Squadron, moves a wheeled fire extinguisher after an RQ-4 Global Hawk preflight maintenance check on Grand Forks Air Force Base, N.D., Sept. 22, 2020. Crew chief responsibilities include assisting with the launch and recovery of an aircraft, diagnosing and solving maintenance issues, and performing pre-, thru- and post flight inspections. (U.S. Air Force photo by Senior Airman Elora J. McCutcheon)
FE 24-105mm F4 G OSS
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