Which aspect is incorporated in antiterrorism physical security measures along with detection and deterrence?

Incorporating notification into antiterrorism physical security measures is crucial because it ensures that any potential threat is quickly communicated to the relevant authorities and response teams. The effectiveness of a physical security plan is largely dependent on the ability to promptly relay information about security breaches or suspicious activities.

This aspect of notification allows for rapid deployment of resources to assess and respond to a situation, which can help mitigate risks and protect individuals and property. A robust notification system can include alarms, alerts, and communication protocols that enable immediate action, increasing the overall effectiveness of detection and deterrence strategies.

In contrast, while investigation, intervention, and observation are also important components of a comprehensive security strategy, they do not directly emphasize the necessity for timely communication of threats, which is critical in minimizing harm during a security incident.