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Marines with Company K, 3rd Battalion, 3rd Marine Regiment simulate taking the Island of Tinian during a helicopter raid, Sept. 20, 2016, as part of exercise Valiant Shield. Valiant Shield is a biennial U.S. Air Force, Navy and Marine Corps exercise held in Guam, focusing on real-world proficiency in sustaining joint forces at sea, in the air, on land and in cyberspace. (U.S. Marine Corps video by Lance Cpl. Kelsey Dornfeld)
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United States Marine Corps3rd Marine RegimentValiant ShieldTinianisland seizure#rd Marine BattalionMV-22 Osprey tiltrotorMarinesMarineaircraftUSMCinfantryguamraidassault
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