U.S. Navy Petty Officer 3rd Class Jumar Balacy, right, documents a surface supplied dive conducted in Mamala Bay, Hawaii, as part of Exercise Rim of the Pacific 2012 on July 27, 2012. Twenty-two nations with more than 40 ships and submarines, more than 200 aircraft and 25,000 personnel are participating in the world's largest international maritime exercise in and around the Hawaiian Islands.