What is the overall purpose of the multiple layers of security in a physical security program?

The overall purpose of the multiple layers of security in a physical security program is to provide comprehensive security in support of common goals. This layered approach is designed to address various potential threats and vulnerabilities by implementing different levels and types of security measures. By integrating physical barriers, surveillance technologies, access control, and human resources, the security program can create a robust defense system that ensures the safety and protection of people, property, and information.

This method not only enhances the versatility and effectiveness of the security posture but also allows for a well-coordinated response to various incidents. Each layer serves a specific function and collectively they form a cohesive strategy that helps to achieve the overarching security goals, such as risk management, threat mitigation, and maintaining a secure environment.