Marine Corps Pfc. Richard Barajas, a rifleman with 1st Battalion, 4th Marine Regiment, 1st Marine Division, provides security during Steel Knight 18 at Marine Corps Base Camp Pendleton, Calif., Dec. 3, 2017. Steel Knight encompasses live-fire ranges and simulated combat across the scope and scale of warfighting, enhancing the readiness and lethality of the 1st Marine Division. ( Marine Corps photo by Lance Cpl. Ana S. Madrigal)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 1st, 4th, amhibious, assault, battalion, camp, divison, knight, marine, pendleton, regiment, steel