Naval Special Warfare Group 3 (NSWG-3), based at the Naval Amphibious Base Coronado in California, is one of six constituent formations of the United States Naval Special Warfare Command. Until 2008, NSWG-3 was composed of two SEAL Delivery Vehicle Teams: SDVT-1 in Pearl Harbor and SDVT-2 in Little Creek. In 2008, SDVT-2 was disestablished and merged into SDVT-1, which is now headquartered in San Diego and operates detachments in Pearl Harbor and Little Creek. SDV Teams are SEAL teams with an added underwater delivery capability. An SDV platoon consists of 12-15 SEALs.