181112-M-EC058-0427 TWENTYNINE PALMS, Calif. (Nov. 12, 2018) Marine Corps Lance Cpl. Bailey Behunin, a rifleman assigned to Kilo Company, Battalion Landing Team 3rd Battalion, 5th Marine Regiment "Darkhorse", 11th Marine Expeditionary Unit (MEU), provides rear security while conducting an urban platoon assault during a pre-deployment training exercise onboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Nov. 12, 2018. The security element prevents enemy reinforcements from advancing to the Marines’ position while also disrupting enemies attempting to retreat and regroup. (U.S. Marine Corps photo by Lance Cpl. Dalton S. Swanbeck/Released)