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.