In 1941, as the United States entered World War II, Point Mugu also became a training area for the Seabees. The Seabees put down a section of Marston mat runway that would become Point Mugu's first airstrip. NAS Point Mugu served as an anti-aircraft training center during the war and was developed in the late 1940s into the Navy's major missile development and test facility. This facility was the site where most of the Navy's missiles were developed and tested during the 1950s and 1960s, including the AIM-7 Sparrow family and the AIM-54 Phoenix air-to-air, Bullpup air-to-surface, and Regulus surface-to-surface missiles. Point Mugu has dominated the area since the 1940s, and is one of the few places in the area that is not agricultural. The base has been home to many ordnance testing programs, and the test range extends offshore to the Navy-owned San Nicolas Island in the Channel Islands. In 1963 the U.S. Navy Marine Mammal Program was established on a sand spit between Mugu Lagoon and the ocean. The facility was relocated in 1967 to Point Loma in San Diego, California.