TESTIMONY_GIVER:
  Brigadier Ferry Zietsman, who was the Security Police Chief before General Johan Coetzee, had the saying of the 11th Commandment, "Don't get caught," so you always had to prepare the mission that you were on in such a way that tracks were not at all left for the CID - to force them kind of in finding out.  If they, with other words, stick to the theoretical - strictly to the theoretical way of investigating a case there wouldn't - they would never find any trail of any evidence.