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US Navy NK U.S. Marine Gunnery Sgt. Ramon D. Rivera II instructs Lance Cpl. Alex V. Qualey and Lance Cpl. Abelardo F. Garcia on the operation of Tactical Water Purification System. en SASEBO Japan Dec Marine Gunnery Sgt Ramon Rivera II instructs Lance Cpl Alex Qualey and Lance Cpl Abelardo Garcia on the operation of Tactical Water