How do you mark a classified audio recording conversation?

To mark a classified audio recording conversation, you should clearly label the recording with the appropriate classification level (e.g., "Confidential," "Secret," or "Top Secret") on the media and any accompanying documentation. Additionally, include a date, a brief description of the content, and the name or title of the person responsible for the classification. Ensure that access is restricted to authorized personnel only and that the recording is stored in a secure location compliant with relevant regulations.