Marines with Company E, 2nd Battalion, 6th Marine Regiment, 2nd Marine Division move from a cleared building during a simulated assault on a combat town aboard Camp Lejeune, N.C., Dec. 4, 2014. Moving in squads, the Marines meticulously cleared each building before moving to the next in order to neutralize the enemy and secure the town. (U.S. Marine Corps photo by Lance Cpl. David N. Hersey/Released)