A Royal Canadian Air Force CC-150 Polaris air-to-air

A Royal Canadian Air Force CC-150 Polaris air-to-air refueller from 8 Wing Trenton, Ontario, refuels RCAF CF-18 Hornets from 425th Tactical Fighter Squadron in Bagotville, Quebec, over the Pacific Ocean near Joint Base Pearl Harbor-Hickam, in Honolulu, Hawaii, July 24, 2012. Twenty-two nations, more than 40 ships and submarines, more than 200 aircraft and 25,000 personnel are participating in the biennial Rim of the Pacific (RIMPAC) exercise from June 29 to Aug. 3, in and around the Hawaiian Islands. The world's largest international maritime exercise, RIMPAC provides a unique training opportunity that helps participants foster and sustain the cooperative relationships that are critical to ensuring the safety of sea lanes and security on the world's oceans. RIMPAC 2012 is the 23rd exercise in the series that began in 1971. (Canadian Forces photo by MCpl Marc-Andre Gaudreault, Canadian Forces Combat Camera)