(1) In general, do members of the Special Investigating Unit’s (SIU) investigation teams have security clearance; if so, at what level; (2) does a certain person (name furnished) have security clearance; if so, at what level; (3) (a) what are the names of the members of the SIU that dealt with the Nkandla investigation and (b) do they all have security clearance; if so, at what level?