Combat Engineers with 3rd Battalion, 25th Marine Regiment, practice setting up a perimeter after destroying a notional barbed wire obstacle at Camp Grayling, Mich., in support of Exercise Northern Strike, Aug. 5, 2018. Camp Grayling, the largest National Guard center in the country covering 147,000 acres, offers many large artillery, mortar, tank ranges and maneuver courses. ( Marine Corps photos by Cpl. Niles Lee)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 25th, 3/25, 3rd, battalion, marforres, marine, marineforcesreserve, marines, mfr, mfrnorthernstrike18, northernstrike18, readiness, regiment, reservist, training