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Staff Sgt. Jonathan Cornelius, Base Defense Operations Center controller assigned to the 319th Security Forces Squadron, boxes with a punching bag on Grand Forks Air Force Base, N.D., Mar. 22, 2021. Staying fit to fight helps keep Airmen mission ready to combat America’s near-to-peer adversaries. (U.S. Air Force photo by Airman 1st Class Jack LeGrand)
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