What must be done whenever classified information is downgraded or declassified?

Whenever classified information is downgraded or declassified, it is essential to promptly mark it to indicate the changes. This marking serves several important purposes: it ensures that all personnel handling the information are aware of its current classification status, supports compliance with legal and regulatory requirements, and helps maintain the integrity of the classification system.

Properly marking downgraded or declassified information helps prevent unauthorized disclosure of still-sensitive information and ensures that information is treated correctly according to its new status. Clear markings enable staff to handle the information appropriately, whether that means restricting access further or allowing wider distribution.

Other options do not fulfill the necessary requirements for handling classified information. For instance, reclassifying it would be inappropriate if it has already been downgraded or declassified. Filing it away securely might not address the need to communicate the new classification status effectively, and simply discarding declassified information contradicts proper records management protocols.