What additional label must be added to the outer wrapper of a parcel containing classified information?

In the context of mailing parcels containing classified information, it is essential to adhere to specific mailing standards to ensure the security and integrity of the package. When sending classified materials, an additional label indicating that the package is being sent via Registered, Certified, or First Class Mail must be added to the outer wrapper. This label indicates the level of service and security applicable to the shipment, which is crucial given the sensitive nature of the contents.

Using these mailing services enhances tracking and accountability, allowing for better monitoring during transit, and adds layers of protection against loss or unauthorized access to classified materials. The regulations surrounding the transport of classified information mandate this signage to help mail carriers and postal services recognize the importance of handling such shipments with the utmost care. This is fundamental in maintaining the overarching national security protocols.