What must be done to maintain container security under CTPAT?

• A. A high-security seal must be affixed to all loaded containers bound for the U.S.
• B. A routine tag is sufficient for international shipments.
• C. Containers must be double-stacked at all times.
• D. Containers require a seal only if requested by customers.

Answer: (A)

Container security under CTPAT relies on a verifiable, tamper-evident seal to protect the container’s integrity from origin to destination. The best practice mandated is to affix a high-security seal to every loaded container bound for the U.S. before it leaves the shipper’s facility. These seals have unique serial numbers and must be recorded and verified at each handoff, creating a traceable chain of custody and making tampering detectable. This approach directly supports CTPAT’s goal of reducing security risks in the supply chain.

Routine tags are not considered secure enough, and other options like double-stacking or applying a seal only if requested do not align with standard CTPAT requirements for shipments headed to the U.S.