Which agency is located in Quantico, Virginia, and oversees the protection of U.S. and foreign classified information in industry?

• A. Defense Counterintelligence and Security Agency (DCSA)
• B. Defense Central Index of Investigations (DCII)
• C. Under Secretary of Defense for Intelligence and Security
• D. Industrial Security Representative (IS Rep)

Answer: (A)

The agency responsible for protecting U.S. and foreign classified information in industry under the National Industrial Security Program is the Defense Counterintelligence and Security Agency. It oversees industrial security for government contractors, handling safeguarding of classified information in the private sector, personnel security, facility clearance, and related investigations. Its presence in Quantico, Virginia, is a key detail that aligns with this role and helps distinguish it from other entities.

The other options don’t fit because they don’t function as the national agency overseeing industrial security. The Defense Central Index of Investigations is a central database used to track investigations, not an agency that administers industrial security. The Under Secretary of Defense for Intelligence and Security is a top-level office, not the operating agency that runs the industrial security program. The Industrial Security Representative is a field role within the security program, not the overarching agency.