How should marked classified information be identifiable during transport?

Marked classified information must be identifiable during transport primarily by placing appropriate markings on the exterior of the packaging. This requirement ensures that those handling the package can quickly and accurately recognize the nature of the contents, which is vital for maintaining security protocols and ensuring that individuals handling the information are aware of its classified status. Clear markings help prevent unauthorized access and ensure that all personnel adhere to the necessary precautions when dealing with sensitive material.

Additionally, marking the exterior is in line with standardized procedures that facilitate proper handling and convey the level of classification, whether it is Confidential, Secret, or Top Secret. This method allows for immediate recognition without needing to open the package or look inside, thus maintaining the integrity of the classified information during transport.