Which person is NOT authorized to change a combination?

• A. A DoD security officer
• B. A building manager
• C. A maintenance technician
• D. A commercial locksmith

Answer: (D)

The key idea is who is allowed to modify access controls like a lock combination. Changes to a combination must be performed by individuals who are officially authorized, can verify the requester, and keep a proper record of the change. A DoD security officer, a building manager, and a maintenance technician are typically part of the internal team with established procedures for approving and documenting such changes, ensuring accountability and an auditable trail.

A commercial locksmith, while skilled, is an external party. Without a formal, documented authorization process and proper oversight, granting them power to change a facility’s combination could create security gaps and bypass internal controls. Therefore, the person not authorized to change a combination is the commercial locksmith.