Turbo-charged crescendo for fitness campaign
U.S. Air Force Staff Sgt. Christopher Dennis, 52nd Maintenance Group maintenance management analysis NCO in charge, performs leg lifts during Turbo-Charged Challenge #3 in the Eifel Powerhaus at Spangdahlem Air Base, Germany, Feb. 10, 2015. The third challenge required participants to perform a variety of calisthenics and aerobic exercises. (U.S. Air Force photo by Airman 1st Class Timothy Kim/Released)

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Photo by: Airman st Class Timothy KimReleased |  VIRIN: 150210-F-OG770-084.JPG