How are airport perimeter security measures typically enforced?

The enforcement of airport perimeter security measures primarily relies on a combination of fencing, surveillance cameras, and regular patrols. This multi-layered approach is crucial for maintaining the integrity of the airport's boundaries and ensuring that unauthorized individuals do not gain access to restricted areas.

Fencing serves as a physical barrier, deterring trespassers while clearly marking the boundaries of the airport. Surveillance cameras play a vital role in monitoring the perimeter for suspicious activity and providing real-time footage for security personnel to act upon. Regular patrols by security staff further enhance these measures, allowing for human observation and immediate response to potential security breaches.

This integrated strategy not only helps prevent unauthorized access but also supports overall situational awareness, which is essential for addressing any threats proactively. Other options do not encompass the comprehensive nature of effective perimeter security, emphasizing instead singular aspects or limited methods that do not provide a robust defense against potential security threats.