[Answer] All classified documents must contain...?

Answer: Banner markings Portion markings andA classification authority block detailing who classified the information why and how long the information must remain classified.

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All classified documents must contain...? Marking Classified Documents Classified information in the United States - Wikipedia Marking Classified Documents Marking Classified Documents Classified documents 25 years or older must be reviewed by any and all agencies that possess an interest in the sensitive information found in the document . Documents classified for longer than 50 years must concern human intelligence sources or weapons … [Answer] All classified documents must contain ...? Answer: Banner markings Portion markings andA classification authority block detailing who classified the information why and how long the information must remain classified . Classified documents 25 years or older must be reviewed by any and all agencies that possess an interest in the sensitive information found in the document. Documents classified for longer than 50 years must concern human intelligence sources or weapons of mass destruction or get special permission. All documents older than 75 years must have special permission . Systematic declassification All classified documents must contain ...? Banner markings Portion markings and A classification authority block detailing who classified the information why and how long the information must remain classified . More than one classification level may appear in the banner line of a single document . K . Notes rough drafts informal working ...

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