Marine Corps Sgt. Damien Duckworth, tactics instructor with Officer Candidate school (OCS), instructs the candidates with OCS how to complete the combat course at OCS, Marine Corps Base Quantico, Va., Oct. 5, 2016. The mission of OCS is to educate and train officer candidates in Marine Corps knowledge and skills within a controlled, challenging, and chaotic environment. ( Marine Corps photo by Cpl. Jacqueline A. Garcia)

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Keywords: camera, candidate, combat, comcam, cvic, mcb, ocs, officer, quantico, school, usmc, usmccomcamfeature