What action should be taken if the controlled airspace intrusion alarm sounds?

The appropriate action when the controlled airspace intrusion alarm sounds is to call the space first, then initiate a security alert. This procedure is established to ensure that the situation is assessed before any further actions are taken. By calling the space, you are confirming the alarm's validity and gathering information about the potential intrusion. Initiating a security alert afterward allows the security forces to respond in an organized manner, maintaining safety and security protocols.

In an operational environment, it's crucial to not react impulsively without verification, as sound security practices dictate the need for situational awareness and appropriate command response. Handling potential security breaches with a structured approach helps in maintaining safety and protecting personnel and assets.