MarineBarracks NASNI

**Marine Barracks, Naval Air Station North Island (NASNI): Short Military History** Marine Barracks at Naval Air Station North Island (NASNI), located in San Diego, California, has played a vital role in base security and ceremonial duties since its activation. Established to provide security, law enforcement, and force protection for one of the U.S. Navy’s most important aviation hubs, the unit has supported naval operations throughout periods of peace and conflict. Marines assigned to NASNI have contributed to installation defense, participated in base emergency response, and maintained readiness to respond to emerging threats. The unit also supports community relations and honors military traditions through ceremonial functions at this historic naval installation.