Lance Cpls. Sueann Cheung and Mildred Valentin monitor and communicate enemy troop movement. U.S. Marine Lance Cpls. Sueann Cheung (left) and Mildred Valentin monitor and communicate enemy troop movement during an Amphibious Assault training scenario of exercise Rim of the Pacific '04 on the island of Oahu, Hawaii, on July 20, 2004. Exercise Rim of the Pacific '04 is an international maritime exercise designed to enhance the tactical proficiency of participating Pacific Rim nations including participants from Australia, Canada, Chile, Japan, South Korea, the United Kingdom, and the U.S. SHARE: Download: Full Size (0.13 MB) Credit: VIRIN: 358464-Y-NDR10-899.jpg Photo Gallery