LtCol Jimmy Birchfield, Commanding Officer, 3rd Battalion, 4th Marines, 7th Marine Regiment, briefs guests before the start of the live-fire training exercise conducted in the Galway Lake Training Area in the Johnson Valley Exclusive Military Use Area, Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Aug. 24, 2018. (Marine Corps

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Photo credit: © Bob Collet / Alamy / Afripics
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