Canadian soldiers assigned to 1st Battalion of Princess Patricia's Canadian Light Infantry board a Marine Corps CH-53 Super Stallion helicopter during an assault operation as part of Rim of the Pacific 2008. RIMPAC is the world's largest multinational exercise and is scheduled biennially by the U.S. Pacific Fleet. Participants include the United States, Australia, Canada, Chile, Japan, the Netherlands, Peru, Republic of Korea, Singapore, and the United Kingdom.