U.S. Marine Corps Sgt. Tyler Zeller, rifleman with Echo Company, 2nd Battalion, 3rd Marine Regiment, reacts to a surprise attack during the Advanced Infantry Course (AIC) aboard Kahuku Training Area, Sept. 20, 2016. AIC is intermediate training designed to enhance and test the Marine's skills and leadership abilities as squad leaders in a rifle platoon. (U.S. Marine Corps Photo by Cpl. Aaron S. Patterson)
<br>Unit: Marine Corps Base Hawaii – Kaneohe Bay
Cpl. Aaron Patterson
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