Ocean Dig (16577210267)

Marine with the Combat Logistics Battalion 15, 15th Marine Expeditionary Unit, uses a tractor, rubber-tired, articulated steering, multi-purpose (TRAM) vehicle to clean up a training area aboard Camp Pendleton, California, March 6, 2015. The made drinking water by running ocean water through a tactical water purification system during Amphibious Squadron/Expeditionary Unit Integration Training (PMINT).

(U.S. Marine Corps photo by Cpl. Elize McKelvey/Released)