Let them take as long as they want, as we are in this far, we might as well finish it. The expectations of those involved, are unlikely to be met, as they have never clearly defined goals, other then answers to events , that may not have answers. I can't see as anyone is going to come out of this at the end, whenever that may be, and feel that this achieved what it set out to do. it does in one way, close the book on this issue, as you can't turn around in three or four years, and decide to have yet another inquiry.