What concept is applied when a new document states, "Squadron commanders will attend the meeting" based on existing documented attendance limitations?

The concept applied in the scenario where a new document states, "Squadron commanders will attend the meeting" based on existing documented attendance limitations is referred to as being "contained in." This means that the information about who should attend the meeting is derived directly from previous, established documents that already contain such details.

In this context, the new statement is not creating new information but rather reiterating or reinforcing what is already found in prior documentation. It shows that the new document is utilizing or referencing existing classification guidance to maintain consistency in information dissemination and compliance with established protocols. This practice ensures that derivative classifiers rely on and appropriately reflect the classified information found in original source documents, adhering to the principles of derivative classification.