CORONADO, Calif. (Feb. 17, 2010) Students from Basic Crewman Training (BCT) Class 68-1 participate in a swimmer surf passage exercise at Naval Amphibious Base Coronado. Surf passage is one of many physically demanding evolutions that are a part of Special Warfare Combat-Craft Crewman training. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kyle D. Gahlau/Released)