Pacific Ocean (July 25, 2006) � The guided-missile destroyers USS Pinckney (DDG 91) and USS Shoup (DDG 86) sail in formation during the Rim of Pacific Exercise 2006. Eight nations are participating in RIMPAC, the world's largest biennial maritime exercise. Conducted in the waters off Hawaii, RIMPAC brings together military forces from Australia, Canada, Chile, Peru, Japan, the Republic of Korea, the United Kingdom and the United States. U.S. Navy photo by Chief Mass Communication Specialist Walter T. Ham IV