SSgt Jeanlouis - U.S. Marine Corps Cpl. Alex Morgan, a metal worker with 1st Maintenance Battalion, 1st Marine Logistics Group, practices welding techniques on Marine Corps Base Camp Pendleton, California, Feb. 4, 2026. U.S. Marines with 1st Maintenance Battalion utilize fabrication and additive manufacturing to create plastic and metal parts for innovative and cost-effective uses, increasing mission readiness across I Marine Expeditionary Force. (U.S. Marine Corps photo by Sgt. Seaira Moore)