A U.S. Marine gives a brief prior to beginning the Amphibious Combat Endurance Test on Marine Corps Base Camp Pendleton, Calif. Jan. 15. - A U.S. Marine gives a brief prior to beginning the Amphibious Combat Endurance Test on Marine Corps Base Camp Pendleton, Calif. Jan. 15.

U.S. Marines with Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa form a wall of shields to protect a simulated U.S. Embassy during a riot-control exercise at the National Gendarmerie Training Center in St. Astier, France, May 13, 2016. The Marines trained alongside the French National Gendarmerie to operate through dense smoke and CS gas while maintaining tightly organized formations. - U.S. Marines with Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa form a wall of shields to protect a simulated U.S. Embassy during a riot-control exercise at the National Gendarmerie Training Center in St. Astier, France, May 13, 2016. The Marines trained alongside the French National Gendarmerie to operate through dense smoke and CS gas while maintaining tightly organized formations.

An opposing force kneels in front of a riot control squad with Combat Logistics Battalion 2 during the unit’s non-lethal weapons training final exercise at Marine Corps Base Camp Lejeune, North Carolina, March 25, 2016. The battalion had to qualify through the Expeditionary Operations Training Group, in preparation for their upcoming deployment with Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa. - An opposing force kneels in front of a riot control squad with Combat Logistics Battalion 2 during the unit’s non-lethal weapons training final exercise at Marine Corps Base Camp Lejeune, North Carolina, March 25, 2016. The battalion had to qualify through the Expeditionary Operations Training Group, in preparation for their upcoming deployment with Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa.

U.S. Marines stand guard during a simulated civilian evacuation at the National Gendarmerie Tactical Training Center in Saint-Astier, France, Oct. 9. The exercise marks the third rotation of Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa Marines training alongside the Gendarmerie. - U.S. Marines stand guard during a simulated civilian evacuation at the National Gendarmerie Tactical Training Center in Saint-Astier, France, Oct. 9. The exercise marks the third rotation of Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa Marines training alongside the Gendarmerie.

Infantrymen with Golf Company, 2nd Battalion, 6th Marine Regiment, and artillerymen with Echo Battery, 2/6, prepare to begin the live-fire portion of their non-lethal weapons training aboard Camp Lejeune, N.C., March 25, 2015. The Marines participated in a two-week NLW course that teaches various riot-control methods. - Infantrymen with Golf Company, 2nd Battalion, 6th Marine Regiment, and artillerymen with Echo Battery, 2/6, prepare to begin the live-fire portion of their non-lethal weapons training aboard Camp Lejeune, N.C., March 25, 2015. The Marines participated in a two-week NLW course that teaches various riot-control methods.

Marines with II Marine Expeditionary Force practice loading and unloading inert rounds into the Non-Lethal, Tube-Launched Munitions System during their practical application training at Camp Lejeune, North Carolina, Aug. 14, 2014. Marine Corps Systems Command Optics and Non-Lethal Systems is fielding the system that sends non-lethal munitions out as far as 500 meters and uses an audible bang to deter a crowd or a person with mal-intent. Its intended use is for military checkpoints. - Marines with II Marine Expeditionary Force practice loading and unloading inert rounds into the Non-Lethal, Tube-Launched Munitions System during their practical application training at Camp Lejeune, North Carolina, Aug. 14, 2014. Marine Corps Systems Command Optics and Non-Lethal Systems is fielding the system that sends non-lethal munitions out as far as 500 meters and uses an audible bang to deter a crowd or a person with mal-intent. Its intended use is for military checkpoints.