Marines on the run

U.S. Marines serving as the assault element of the Maritime Raid Force with the 1st Force Reconnaissance Company, 15th Marine Expeditionary Unit engage targets during a Special Operations Training Group live-fire qualification at Imperial Valley, Calif., May 8, 2012. (DoD photo by Cpl. John Robbart III, U.S. Marine Corps/Released)

U.S. Marines serving as the assault element of the Maritime Raid Force with the 1st Force Reconnaissance Company, 15th Marine Expeditionary Unit engage targets during a Special Operations Training Group live-fire qualification at Imperial Valley, Calif., May 8, 2012. (DoD photo by Cpl. John Robbart III, U.S. Marine Corps/Released)