U.S. Sailors salute on the hospital ship USNS Mercy (T-AH 19) as the ship passes the USS Arizona Memorial during Rim of the Pacific (RIMPAC) 2014 in Pearl Harbor, Hawaii, June 25, 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.