U.S. Sailors moor the guided missile destroyer USS Spruance (DDG 111) June 25, 2014, at Joint Base Pearl Harbor-Hickam, Hawaii, as they arrive to participate in the Rim of the Pacific (RIMPAC) 2014 exercise. 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.