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Overwatch A Marine with Force Reconnaissance Platoon, 31st Marine Expeditionary Unit, sights his M1110 semi-automatic sniper system to provide security during a maritime interdiction training exercise aboard the dock landing ship Germantown in the Philippine Sea June 24. (Cpl. Karis Mattingly/Marine Corps) (Cpl. Karis Mattingly/31st Marine Expeditionary Unit)