The early warning radar at Beale AFB has been a part of the United States ballistic missile early warning system since 1980, and is operated by the Air Force Space Command. Upgrades to the early warning radar included the replacement of electronic hardware and computer software. The hardware modifications included replacing existing computers, graphic displays, communication equipment, and the radar receiver/exciter in order to better identify and provide more precise tracking of a ballistic missile launched against the United States. The radar is part of an extensive network of land and sea-based radars now being developed and deployed to detect and track ballistic missiles, and to provide targeting information to interceptor missiles through the command and control system.