399712 11: United States Marine Recruits crawl under barbed wire during a simulated combat exercise at Edson range January 15, 2002 in Camp Pendleton, CA. The Marine Corps graduates nearly 500 recruits a month from its southern California training facility and about 450 from its recruit training facility in South Carolina to bolster its force of nearly 173,000 men and women worldwide. (Photo by Scott Olson/Getty Images)
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