U.S. Marines with 1st Law Enforcement Battalion, I Marine Information Group, inspect an M2 Browning .50 caliber machine gun during a training exercise on Camp Pendleton, Calif., Oct. 24, 2017.The importance of this exercise was to prepare the Marines for their upcoming deployment with the 13th Marine Expeditionary Unit. - U.S. Marines with 1st Law Enforcement Battalion, I Marine Information Group, fire a M240B machine gun during a night live fire training exercise on Camp Pendleton, Calif., Oct. 24, 2017.The importance of this exercise was to prepare the Marines for their upcoming deployment with the 13th Marine Expeditionary Unit. (U.S. Marine Corps photo by LCpl Anabel Abreu Rodriguez)