Marine Corps Sgt. Alec C. Ward, a primary marksmanship instructor with Formal Marksmanship Training Center, Headquarters Company, Weapons and Field Training Battalion, adjusts the rifle combat optic (RCO) of a M16A4 service rifle aboard Edson Range, Marine Corps Base Camp Pendleton, Calif., April 21, 2016. Ward used a collimator to adjust the sights of recruits RCOs prior to firing. ( Marine Corps photo by Lance Cpl. Erick J. ClarosVillalta/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 3d, battalion, camp, company, grass, lima, pendelton, recruit, rtbn, training, week