U.S. Marines with Kilo Company, Battalion Landing Team, 3rd Battalion, 1st Marine Regiment, 15th Marine Expeditionary Unit move through the terrain providing security during a simulated mechanized night raid aboard Camp Pendleton, Calif., Oct. 23, 2014. BLT 3/1 is the 15th MEU’s ground combat element. (U.S. Marine Corps photo by Cpl. Steve H. Lopez/Released)