Air Force Chief Master Sgt. Heriberto Diaz Jr., Erwin Professional Military Education Center commandant, congratulates Marines from the 3rd Infantry Battalion for coordinating the Okinawa Joint Fitness Challenge Sept. 26, 2018, at Kadena Air Base, Japan. The OJFC was designed to mimic obstacles and challenges faced in the battlefield such as sprinting, running ammunition cans, transporting wounded personnel to safety and tossing simulated grenades.

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