C5.4.5. Motion Picture Films and Videotapes. Classified
motion picture films and videotapes must be marked with their classification
and any appropriate control notices at the beginning and end of the played or
protected portion. Other required security markings shall be placed at the
beginning of the projected or played portion. Reels and cassettes shall be
marked with the overall classification of the item and kept in containers
marked with the classification and other required security markings.