Pacific Ocean - U.S. Navy Sailors from USS Chosin (CG 65) prepare self-defense missiles in preparation of live fire missile range events during Rim of the Pacific (RIMPAC) 2010, July 09, 2010. RIMPAC is a large-scale biennial exercise designed to increase mutual cooperation and enhance the tactical capabilities of participating nations in various aspects of maritime operations at sea.  Produced by Petty Officer 2nd Class Thomas L. Rosprim. Also available in High Definition.