Marines coordinate fires for High Mobility Artillery Rocket System during an M142 HIMARS live fire exercise at Camp Pendleton March 16, 2016. During the exercise, Marines coordinated fires based on hypothetical combat situations they might encounter while deployed. The HIMARS rounds are aided by Global Positioning System (GPS) technology and can travel to altitudes up to 75 kilometers and can precisely engage targets up to 40 miles away. The Marines are with Battery S, 5th Battalion, 11th Marine Regiment, 1st Marine Division, I Marine Expeditionary Force. - Marines coordinate fires for High Mobility Artillery Rocket System during an M142 HIMARS live fire exercise at Camp Pendleton March 16, 2016. During the exercise, Marines coordinated fires based on hypothetical combat situations they might encounter while deployed. The HIMARS rounds are aided by Global Positioning System (GPS) technology and can travel to altitudes up to 75 kilometers and can precisely engage targets up to 40 miles away. The Marines are with Battery S, 5th Battalion, 11th Marine Regiment, 1st Marine Division, I Marine Expeditionary Force.

Marines plot objective points on a map to reach during a combat endurance challenge Marine Corps Base Camp Pendleton, Calif. Feb. 5, 2016. The challenge consisted of hiking nearly seven miles, testing weapons systems, combat lifesaving skills, land navigation and simulated casualty evacuation. The Marines with Battery Q, 5th Battalion, 11th Marine Regiment conducted the training aboard MCB Camp Pendleton. - Marines plot objective points on a map to reach during a combat endurance challenge Marine Corps Base Camp Pendleton, Calif. Feb. 5, 2016. The challenge consisted of hiking nearly seven miles, testing weapons systems, combat lifesaving skills, land navigation and simulated casualty evacuation. The Marines with Battery Q, 5th Battalion, 11th Marine Regiment conducted the training aboard MCB Camp Pendleton.

A Marine with 5th Battalion, 11th Marine Regiment, 1st Marine Division, loads an electronic M2 .50-caliber machine gun in a Combat Convoy Simulator at Marine Corps Base Camp Pendleton, California, Feb. 2, 2016. The CCS at first glance looks like an expensive, high-tech video game, but its primary use is preparing Marines for real-world combat missions with simulations of realistic scenarios. - A Marine with 5th Battalion, 11th Marine Regiment, 1st Marine Division, loads an electronic M2 .50-caliber machine gun in a Combat Convoy Simulator at Marine Corps Base Camp Pendleton, California, Feb. 2, 2016. The CCS at first glance looks like an expensive, high-tech video game, but its primary use is preparing Marines for real-world combat missions with simulations of realistic scenarios.

Marines and Sailors practice clearing rooms and detaining non-combatants as a part of the Raid Leaders Course at Marine Corps Base Camp Pendleton, Calif., Jan. 12, 2016. While the course emphasizes combat marksmanship fundamentals, Marines must be able to identify and properly handle non-combatants in urban military operations. The Marines participating in the training course are with Fox Company, 2nd Battalion, 4th Marine Corps Regiment. The Raid Leaders Course is run by Expeditionary Operations Training Group, I Marine Headquarters Group, I Marine Expeditionary Force. - Marines and Sailors practice clearing rooms and detaining non-combatants as a part of the Raid Leaders Course at Marine Corps Base Camp Pendleton, Calif., Jan. 12, 2016. While the course emphasizes combat marksmanship fundamentals, Marines must be able to identify and properly handle non-combatants in urban military operations. The Marines participating in the training course are with Fox Company, 2nd Battalion, 4th Marine Corps Regiment. The Raid Leaders Course is run by Expeditionary Operations Training Group, I Marine Headquarters Group, I Marine Expeditionary Force.