U. S. Marine Corps Staff Sgt. Chad Twenter, checkpoint monitor, explains the plan for the checkpoints at the Provost Marshall’s Office on Camp Pendleton, Calif., June 30, 2017. Checkpoints on Vandergrift were used as a deterrent for those driving under the influence of alcohol. (U. S. Marine Corps photo by Lance Cpl. Betzabeth Y. Galvan)

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Keywords: ., betzabeth, camp, chad, checkpoints, corps, galvan, lcpl., marine, marshalls, office, pendleton, police, provost, ssgt, twenter, zd670