2nd Lt. Steven Parent, 319th Mission Support Group performs a sit-up during one portion of the Triple 8 Fitness Challenge at the base outdoor running track on Grand Forks Air Force Base, N.D., on Sept. 5, 2013. The Triple 8 Fitness Challenge is a premier fitness event designed to test the conditioning limits of Air Force athletes. Parent completed 97 repetitions and was awarded a trophy for accomplishing the most sit-ups. (U.S. Air Force photo/ Senior Airman Xavier Navarro)
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