U.S. Marine Corps Sgt. Michael Zaharias, a martial arts instructor trainee from Detachment 1, Communication Company, Combat Logistics Regiment 45, 4th Marine Logistics Group, stands ready to defend himself during a class held at Grissom Air Reserve Base, Ind., June 20, 2014. Grissom Marines went through 13 vigorous days of training to become martial arts instructors. (U.S. Air Force photo/Tech. Sgt. Douglas Hays)
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