What must be included when finalizing a document that contains Secret information?

When finalizing a document that contains Secret information, it is essential to include all standard markings. This is important because standard markings serve several critical purposes in the handling of classified materials. They indicate the classification level—such as Secret—of the information within the document, alerting personnel to the sensitivity of the content and the handling precautions required.

By marking the document appropriately with all standard markings, you help ensure that everyone who accesses the information understands its classification and the need for protection. This includes the appropriate handling, storage, and dissemination protocols to prevent unauthorized access or disclosure.

Including only Confidential markings or having no markings at all would not provide the necessary clarity about the document's sensitivity and would fail to comply with the established guidelines for managing classified information. A verbal clearance statement does not serve as a substitute for the required markings and does not establish a clear record of classification that can be referenced or enforced. Thus, all standard markings are crucial for the proper handling and accountability of Secret information.