When deriving classified information from multiple sources, what is appropriate to include in the 'Derived From' line?

In the process of marking classified information, the 'Derived From' line serves to indicate the sources upon which the classification of the information is based. Including a complete list of every source document used is crucial as it provides transparency and allows for proper tracking and accountability of the information that has been classified. This thoroughness ensures that anyone reviewing the classification can easily identify and access the original materials, thus supporting the appropriate management of classified information and compliance with security protocols.

The specificity of listing all source documents reflects adherence to established standards for handling classified data and reinforces the importance of integrity in the classification process. By documenting every source, it assists in future declassification reviews and aids in ensuring that the derivation of classified content is properly justified and traceable.