In a properly classified document, if the source states the training exercise is Secret, what is the classification of the new statement regarding the training exercise?

When a classified source provides information indicating a particular classification level, such as stating that a training exercise is classified as Secret, any new statement that derives from that source must be classified at the same level or higher, unless the information can be declassified or determined to be unclassified.

In this case, since the source explicitly states that the training exercise is Secret, any new statement that refers to or builds upon that information must also be classified as Secret. This aligns with the principles of derivative classification, which ensure that information is properly designated based on its source material. A classification of Secret indicates that unauthorized disclosure of this information could reasonably be expected to cause serious damage to national security, thereby necessitating its protection.

As a result, the correct classification of the new statement regarding the training exercise, in adherence to the established classification from the source, is indeed Secret.