Corporal Justin Rea, an infantryman with Company C, 1st Battalion, 2nd Marine Regiment, 2nd Marine Division, rushes into a room to clear the building during military operations in urban terrain training aboard Marine Corps Base Camp Lejeune Oct. 7, 2013. First Battalion, 2nd Marines held a battalion-level field exercise Sept. 28 – Oct. 9, marking the first battalion-size training event since December 2012.