Senator IAN CAMPBELL (Minister for the Environment and Heritage) (12:25 PM) —I do not have that information before me but I note that my staff have security checks on a regular basis. I would presume that it is sound practice. I am not an expert on these practices but I would imagine that it would be sensible to ensure these matters are up to date. One would imagine that, if there had been some behaviour or some other activity that had changed over the course of two years, then that would be something that would be entirely appropriate to review from time to time.