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E.O. 12356 and Information Security Oversight Office Directive No. 1.
48 FR 10821, Mar. 15, 1983, unless otherwise noted.
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(a) When it will serve a useful purpose, original classification authorities may, at the time of original classification, specify that downgrading of the assigned classification will occur on a specified date or upon the occurrence of a stated event.
(b) Classified information marked for automatic downgrading is downgraded accordingly without notification to holders.
(c) Classified information not marked for automatic downgrading may be assigned a lower classification designation by the originator or by an official authorized to declassify the same information. Prompt notice of such downgrading shall be provided to known holders of the information.