There are a number of areas there. Of course prevention is a key concern, and the regulatory regime is where we focus that, so I have two points.
One of the major things we're doing right now is a major risk assessment across Canadian waters to look at a better way of evaluating those risks on a more even basis and to be able to understand the comparative risks and some of the factors in terms of effective mitigation.
We've done a fair bit of work in terms of what we call “term POLE assessments”, where we look at a specific proposal for a terminal, etc. Those represent a broad consensus of work across departments to look at the whole picture. But in terms of the north and the activities up there, we get involved in supporting the Nunavut Impact Review Board, looking at particular projects up there, looking at a lot of specific details like overwintering of oil in tankers to support the development of a site. Also, in our regulatory regime our people are very active in these areas, and they work very closely with the communities and the suppliers, etc. There's a fair amount of flexibility in terms of how you can apply the regulatory regime, and wherever we see a need to increase that, we have various policy requirements we can add, or we can look at regulatory changes.