Marine Gunnery Sgt. Cory Korey Wright, instructs as Marine Lance Cpls. Austin Bontrager, top, and Andrew Hall, grapple during a self-defense demonstration at Grissom Air Reserve Base, Ind., April 23, 2014. The Marines from Detachment One, Communication Company, Combat Logistics Regiment 45, 4th Marine Logistics Group, put on the display for Navy Junior ROTC students from Anderson High School, Anderson, Ind. (U.S. Air Force photo/Tech. Sgt. Douglas Hays)
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