What must continue to be met to lengthen the classification duration?

To lengthen the classification duration of a document, it is essential that the standards set forth in Executive Order 13526 are met. This order outlines the framework and guidelines for classification in the United States, including criteria for determining classifications, the duration of those classifications, and the circumstances under which they can be extended. Specifically, this means that the original reasons for classifying the information must still apply, and the potential damage to national security from unauthorized disclosure must still be valid.

Classifying information is not a static decision; it requires ongoing validation that the information still warrants protection. Meeting these standards ensures that the classification remains justified according to the established legal and policy framework. Without adherence to these standards, the continued classification may not be defensible, which is why they are crucial in the process of lengthening the duration of classification.