Marines with 3rd Battalion, 11th Marine Regiment, display the Ground Renewable Expeditionary Electronics Network System during the Energy Capability Exercise, in alignment with the Great Green Fleet initiative, at Camp Wilson aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, California, Dec. 6, 2016. - Marines with 3rd Battalion, 11th Marine Regiment, display the Ground Renewable Expeditionary Electronics Network System during the Energy Capability Exercise, in alignment with the Great Green Fleet initiative, at Camp Wilson aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, California, Dec. 6, 2016.

A Marine with 3rd Battalion, 11th Marine Regiment, fire a 155mm M777A2 Lightweight Towed Howitzer in the Lead Mountain Training Area at Marine Corps Air Ground Combat Center Twentynine Palms, California, May 3, 2016. This firing exercise was focused on the ability of the M776 Chrome Tubes to resist the formation of hardened downbore residue when firing the M232A1 Propelling Charge 5H (top zone charges). - A Marine with 3rd Battalion, 11th Marine Regiment, fire a 155mm M777A2 Lightweight Towed Howitzer in the Lead Mountain Training Area at Marine Corps Air Ground Combat Center Twentynine Palms, California, May 3, 2016. This firing exercise was focused on the ability of the M776 Chrome Tubes to resist the formation of hardened downbore residue when firing the M232A1 Propelling Charge 5H (top zone charges).

A Marine with Battery Q, 5th Battalion, 11th Marine Regiment, I Marine Expeditionary Force, guides a High Mobility Artillery Rocket System launcher during Spring Fire Exercise at Marine Corps Base Camp Pendleton March 31, 2016. The regiment, comprised of four artillery battalions and a headquarters battalion, put their skills to the test during a large-scale, combined-arms training evolution in preparation for future deployments and operations. - A Marine with Battery Q, 5th Battalion, 11th Marine Regiment, I Marine Expeditionary Force, guides a High Mobility Artillery Rocket System launcher during Spring Fire Exercise at Marine Corps Base Camp Pendleton March 31, 2016. The regiment, comprised of four artillery battalions and a headquarters battalion, put their skills to the test during a large-scale, combined-arms training evolution in preparation for future deployments and operations.

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.

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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 with Battery I, 3rd Battalion, 11th Marine Regiment, 1st Marine Division, fire an M777 Howitzer¬ during the opening day of live-fire operations for Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, on Dec. 10, 2015. The tough, realistic training is intended to develop combat skills necessary to operate as the ground combat element of the I Marine Expeditionary Force. - Marines with Battery I, 3rd Battalion, 11th Marine Regiment, 1st Marine Division, fire an M777 Howitzer¬ during the opening day of live-fire operations for Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, on Dec. 10, 2015. The tough, realistic training is intended to develop combat skills necessary to operate as the ground combat element of the I Marine Expeditionary Force.

A Marine assigned to Company A, 1st Battalion, 11th Marine Regiment, 1st Marine Division, prepares an M777 howitzer to fire at Marine Corps Base Camp Pendleton, June 17, 2015. CH-53E Super Stallions transported howitzers and ammunition as part of 1/11’s quarterly exercise to test the artillery Marines’ proficiency and readiness. - A Marine assigned to Company A, 1st Battalion, 11th Marine Regiment, 1st Marine Division, prepares an M777 howitzer to fire at Marine Corps Base Camp Pendleton, June 17, 2015. CH-53E Super Stallions transported howitzers and ammunition as part of 1/11’s quarterly exercise to test the artillery Marines’ proficiency and readiness.

Marines check the GPS coordinates of their M777A2 lightweight 155 mm howitzers Oct. 30 during a command post exercise for Artillery Relocation Training Program 14-3. “Camp Fuji provides that cold weather training environment that artillery units need to be familiar with,” said Sgt. Maj. Marvin M. Magcale, the battalion sergeant major for 3rd Battalion, 12th Marines. “The Marines and sailors in this battalion will be better prepared to accomplish the mission involving cold weather. Austere conditions obviously affect not only the Marines and sailors, but their equipment as well.” The Marines are with Battery B, 1st Bn., 12th Marine Regiment, 1st Marine Division, based out of Kaneohe Bay, Hawaii, and are currently assigned to 3rd Bn., 12th Marines, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program. - Marines check the GPS coordinates of their M777A2 lightweight 155 mm howitzers Oct. 30 during a command post exercise for Artillery Relocation Training Program 14-3. “Camp Fuji provides that cold weather training environment that artillery units need to be familiar with,” said Sgt. Maj. Marvin M. Magcale, the battalion sergeant major for 3rd Battalion, 12th Marines. “The Marines and sailors in this battalion will be better prepared to accomplish the mission involving cold weather. Austere conditions obviously affect not only the Marines and sailors, but their equipment as well.” The Marines are with Battery B, 1st Bn., 12th Marine Regiment, 1st Marine Division, based out of Kaneohe Bay, Hawaii, and are currently assigned to 3rd Bn., 12th Marines, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program.