What is the minimum round frequency for TOP SECRET information when guards are used as supplemental protection?

• A. Every 1 hour
• B. Every 2 hours
• C. Every 3 hours
• D. Every 4 hours

Answer: (B)

Guard rounds for TOP SECRET information, when guards are used as supplemental protection, must occur at least every 2 hours. This interval provides timely detection of any attempt to access, move, or tamper with the classified material while balancing manpower and practicality. TOP SECRET requires a stronger, more frequent check than lower classifications, so 2 hours is the baseline to deter tampering and enable a swift response if a discrepancy is found. A 1-hour interval would be more protective but is not the standard minimum, while 3 or 4 hours would leave too large a window for undetected tampering. Regular, documented rounds help ensure containment, verify that locks and containers remain secure, and maintain accountability across shifts.