When using the Defense Courier Service, what is still mandatory?

Using the Defense Courier Service mandates proper package labeling for all classified materials to ensure the security and appropriate handling of sensitive information. Accurate labeling is crucial because it provides clear identification of the contents and the level of classification, which is essential for compliance with security protocols and for preventing unauthorized access. This labeling also facilitates the proper routing and handling of the packages throughout the transportation process, minimizing the risk of misdelivery or mishandling. Ensuring that all classified materials are correctly labeled is a vital step in maintaining the integrity of national security measures and upholding the standards set by the Department of Defense.