HAND OVER HAND U.S. Navy Seaman Apprentice Giovanny Magallon pulls himself along a rope while participating in an obstacle course at the Naval Special Warfare Center aboard Naval Amphibious Base, Coronado, Calif., July 15, 2008. Magallon is a Special Warfare Combatant-craft crewman student in the second week of Basic Crewman Training. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 960909-S-PXY53-175.jpg Photo Gallery