A U.S. Marine swims across a training tank pool. A U.S. Marine from Golf Company, 2nd Battalion, 1st Marine Regiment, swims across a training tank pool during annual swim qualifications at Camp Pendleton, Calif., on Nov. 29, 2006. The swim qualification is designed for Marines to maintain amphibious operation readiness. SHARE: Download: Full Size (0.1 MB) Credit: VIRIN: 596206-L-JFY68-276.jpg Photo Gallery