AMPHIBIOUS ASSAULT A U.S. Marine Corps amphibious assault vehicle launches into the Pacific Ocean during the Rim of the Pacific 2012 exercise, July 12, 2012. Twenty-two nations and more than 25,000 personnel are participating in the biennial RIMPAC exercise. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 509798-W-ITA14-754.jpg Photo Gallery