Which DoD system is used to verify a facility's clearance?

The Industrial Security Facilities Database (ISFD) is the correct choice for verifying a facility's clearance. This system is specifically designed to maintain and manage information regarding security clearances for facilities engaged with the Department of Defense (DoD).

ISFD provides essential data regarding the security status of industrial facilities, including their clearances at various levels and compliance with security regulations. It serves as a key resource for Facility Security Officers (FSOs) to confirm that a facility has the proper clearance levels required for handling classified information.

While other systems mentioned may have roles in broader security management or clearance processes, they do not specifically focus on the verification of a facility's clearance status. Understanding the function of ISFD is critical for FSOs to ensure that authorized personnel have access to classified information within secure environments, supporting the objectives of the National Industrial Security Program (NISP).