From left, Canadian ship HMCS Regina, Peruvian ship BAP Sanchez Carrion and U.S. Coast Guard Cutter USCGC Thetis move in formation for a photo exercise during PANAMAX 2007 in the Pacific Ocean, Aug. 31. PANAMAX 2007 is a joint and multinational training exercise tailored to the defense of the Panama Canal, involving civil and military forces from the region.