U.S. and international service members enter the water at the start of the women's 50-meter butterfly event during a swim meet in support of exercise Rim of the Pacific (RIMPAC) 2014 at Joint Base Pearl Harbor-Hickam, Hawaii, June 30, 2014. RIMPAC is a U.S. Pacific Fleet-hosted biennial multinational maritime exercise designed to foster and sustain international cooperation on the security of the world's oceans.