An email, including forwarded emails, regarding the legality of another agency requesting to interview FBI personnel. The author of one of the forwarded emails states that whenever this type of request is made, both the agent and FBI are to be briefed beforehand in writing of the issues to be discussed in the interview. A representative of the bureau is also to be present when the agent is interviewed or testifies. The email states, "by going through this process, we get a clear picture of whether the other agency is investigating out employee and what the employee should be advised of."