Sailors with 1st Medical Battalion, 1st Marine Logistics Group, I Marine Expeditionary Force, learn how to use an M272 water testing kit during a preventive medicine training event on Camp Pendleton, California, Jan. 26, 2022. The exercise was a 3-day, field-based training evolution that equipped regional Preventive Medical Officers, Environmental Health Officers and Preventive Medicine Technicians with the knowledge necessary to preserve the combat readiness of operational forces ashore by preventing illness and injury. ( Marine Corps Photo by Lance Cpl. Bradley Ahrens)

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Keywords: 1st, marines, mlg, sailors, usmc, usn