JUMPING SKILL Marines and sailors practice jumping out the back of a CH-46 Sea Knight helicopter during a basic reconnaissance course at Naval Amphibious Base Coronado and in San Diego Bay, Nov. 6, 2013. These students have been training to become reconnaissance Marines and are halfway through the course. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 189110-M-VIP85-612.jpg Photo Gallery