A U.S. Marine with Combat Logistics Battalion 15, 15th Marine Expeditionary Unit, pours unfiltered water into a tactical water purification system to support a simulated foreign humanitarian assistance mission during Certification Exercise (CERTEX) aboard Camp Pendleton, Calif., April 11, 2015. The 15th MEU’s combat logistics element tested their skills to provide humanitarian assistance and engineering support such as water purification. (U.S. Marine Corps photo by Cpl. Elize McKelvey/Released)
Cpl. Elize McKelvey
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