What must happen to classified information after its expiration date?

After classified information reaches its expiration date, it is automatically declassified unless an extension is formally requested and granted. This process ensures that classified information does not remain classified indefinitely without justification. The system of classification is designed to protect national security interests while also recognizing that information can become less sensitive over time, thereby allowing for periodic reevaluation.

The automatic declassification process reflects the principle that information should be accessible to the public when it no longer poses a security risk, thus promoting transparency and accountability in government. Extensions can be necessary for various reasons, such as ongoing national security concerns or operational sensitivity, but unless an extension is specifically in place, the information will revert to an unclassified status after its expiration date. This mechanism is an important part of managing classified information and ensuring that outdated security classifications do not hinder access to information that is no longer deemed sensitive.