150902-N-KB563-061 CORONADO, Calif. (Sept. 2, 2015) Basic Underwater Demolition/SEAL (BUDS) candidates cover themselves in sand during surf passage on Naval Amphibious Base Coronado. Surf passage is one of the many physically demanding evolutions that are a part of the first phase of SEAL training. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael Russell/Released)