So anyway Camp Pendleton is the major West coast base for the U.S. Marine Corps. Spread over 125 acres, the camp trains Marines and other branches of the armed services.
"Amphibious and sea-to-shore training takes place at several key points along the base's 17 miles (27 km) of coastline. The main base is in the Mainside Complex, at the southeastern end of the base, and the remote northern interior is an impact area. Daytime population is around 100,000."
Camp Pendleton remains the last major undeveloped portion of the Southern California coastline, save for a few small state parks.