Which description best defines the Close-in Sentry (CIS)?

Which description best defines the Close-in Sentry (CIS)?

• A. Provides surveillance and guards access to the main gate.
• B. Maintains surveillance over the assigned area; prevents unauthorized entry.
• C. Monitors CCTV across the installation's administrative buildings.
• D. Oversees training and drills for security staff.

Answer: (B)

Close-in Sentry is about watching the immediate area around a protected asset and actively preventing unauthorized entry. This role focuses on the near-perimeter, providing continuous observation to detect signs of intrusion and deter or stop attempts before they reach critical access points. The description that best captures this function is maintaining surveillance over the assigned area and preventing unauthorized entry, because it succinctly describes both the ongoing monitoring and the defensive action taken in the near zone. The other duties describe different security tasks: guarding a main gate is a gate-control function tied to access points rather than the near-perimeter observer; monitoring CCTV across administrative buildings describes centralized, broader surveillance rather than the close-in defensive posture; and overseeing training or drills pertains to readiness and instruction rather than real-time observation and intrusion prevention.

Close-in Sentry is about watching the immediate area around a protected asset and actively preventing unauthorized entry. This role focuses on the near-perimeter, providing continuous observation to detect signs of intrusion and deter or stop attempts before they reach critical access points. The description that best captures this function is maintaining surveillance over the assigned area and preventing unauthorized entry, because it succinctly describes both the ongoing monitoring and the defensive action taken in the near zone.

The other duties describe different security tasks: guarding a main gate is a gate-control function tied to access points rather than the near-perimeter observer; monitoring CCTV across administrative buildings describes centralized, broader surveillance rather than the close-in defensive posture; and overseeing training or drills pertains to readiness and instruction rather than real-time observation and intrusion prevention.