Airmen from the 28th Civil Engineering Squadron carry a manikin on a stretcher at Ellsworth Air Force Base, S.D., June 11, 2021. The litter carry obstacle course event of the Prime Base Engineer Emergency Force (BEEF) Challenge required a team of four engineers to perform 10 pushups and sprint to a 180-pound training dummy, where they then lifted and moved it through a one-eighth mile obstacle course. (U.S. Air Force photo by Airman 1st Class Quentin K. Marx)
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