In an emergency situation with air defense aircraft, who would the ARTCC notify?

In an emergency situation involving air defense aircraft, the ARTCC (Air Route Traffic Control Center) would notify the ADCF (Air Defense Command Facility). This is because the ADCF is responsible for the coordination and execution of air defense operations within its area of responsibility. It houses the personnel and systems required to manage and respond to any airborne threats, ensuring that effective measures are taken to maintain airspace security.

The other options have roles in different emergency scenarios but are not directly involved in the air defense protocol. Local law enforcement typically handles ground-level emergencies or public safety incidents. The Base Command Center is responsible for ground operations and base security but does not play the primary role in managing airborne threats. Civilian operators might be involved in broader traffic management but do not have jurisdiction or the specific operational focus required in military air defense coordination. Thus, notifying the ADCF ensures that the situation is handled with the specialized attention it requires.