What action should you take when using removable media in a Sensitive Compartmented Information Facility (SCIF)?

1) Scan the media for viruses before using it
2) Ensure the media is properly labeled and authorized for use in the SCIF
3) Dispose of the media in a secure manner after use
4) All of the above

When using removable media in a SCIF, individuals should scan for viruses, ensure proper labeling and authorization, and dispose of the media securely after use. Therefore, the correct answer is 4) All of the above.

Explanation:

When using removable media in a Sensitive Compartmented Information Facility (SCIF), it is important to take the following actions:

Scan the media for viruses before using it: This helps ensure that the media is free from malware or other malicious software that could compromise the security of the SCIF.
Ensure the media is properly labeled and authorized for use in the SCIF: This helps maintain control over the types of media that are allowed in the SCIF and ensures that only authorized individuals have access to it.
Dispose of the media in a secure manner after use: This is crucial to prevent unauthorized access to the information stored on the media once it is no longer needed.

Therefore, the correct answer is option 4) All of the above.