TESTIMONY_GIVER:
  I understand.  Your first assessment is correct, where they had to track down and trace and identify ANC cadres that they worked with and lived with in exile, and then follow them to their place of home - of house where they stayed, and then make sure that is the place that they sleep, how many other ANC cadres lives in that house, comes out and go there.  So it was quite a long period of observation that would have had to take place before a final decision on the blowing of residences or houses could be decided on.