PSI offers a vast array of measures to deny access to unauthorized personnel from physically accessing facilities and grounds. To ensure that a facility is secure, one must deter, delay, detect, and respond in an effective manner.

Some measures taken include:

• High-grade door locks;
• Fencing, barriers, and bollards;
• Armed and unarmed security guards;
• Access control systems;
• Facility security;
• Monitoring and intrusion detection; and
• Alarm systems.