Pacific Ocean (July 8, 2006) - Sailors aboard the Arleigh Burke-class destroyer USS O'Kane (DDG 77) participate in "Power Hour", a command wide physical training class during Rim of the Pacific (RIMPAC) 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 Mass Communication Specialist 3rd Class Marcos T. Hernandez