U.S., Australian and Canadian sailors fast rope out of a U.S. Navy MH-60S Nighthawk helicopter from Helicopter Sea Combat Squadron 4 during Rim of the Pacific 2012, an international maritime exercise, on Marine Corps Base Hawaii, Kaneohe Bay, July 16, 2012. Twenty-two nations, more than 40 ships and submarines, more than 200 aircraft and 25,000 people are participating in the exercise in and around Hawaii.