Marines conduct a security patrol during a field exercise on Camp Lejeune, N.C., March 9, 2016. The Marines are assigned to 2nd Battalion, 8th Marine Regiment. Throughout their patrol, the company was sporadically assaulted by an opposing force equipped with simulated rifles, hand grenades and rocket-propelled grenade launchers to test their ability to respond to enemy contact and execute proper procedures. Marine Corps photo by Cpl. Paul S. Martinez