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Two U.S. Army AH-64D Apache attack helicopters assigned to the 2-6 Cavalry Squadron, 25th Combat Aviation Brigade launch eight "fire and forget" AGM-114L Hellfire Air to Surface Missiles during a training exercise off the coast of Oahu as part of the Rim of the Pacific (RIMPAC) 2016. Exercise participants boosted their proficiency in tactics, targeting and live firing during a sinking exercise (SINKEX) with the decommissioned Pearl Harbor frigate USS Crommelin on July 19, 2016.