A Marine from the 2nd Battalion, 3rd Marine Regiment, based out of Marine Corps Base Hawaii Kaneohe Bay, fires a shotgun to breach a door at Schofield Barracks, Hawaii, on Aug. 30, 2017. Combat engineers from the 29th Brigade Engineer Battalion, 3rd Brigade Combat Team, 25th Infantry Division, trained with the Marines on door breaching techniques. (U.S. Army photo by Staff Sgt. Armando R. Limon, 3rd Brigade Combat Team, 25th Infantry Division)
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