In most cases, we have in-house expertise within the federal public service, just because of all the various departments we're able to rely upon. As I mentioned, however, there are cases in which we might have uncertainty or conflicting views around science. That typically happens when there's emerging science either within the field or within the process itself, as when information is brought into the process late.
One example in recent history is that of the Pacific Northwest LNG facility, on which a lot of conflicting scientific views and material came in around fish spawning beds. This was a key issue in that review and was of critical importance to local communities and indigenous communities.
In that case, many different science avenues were pursued, both within government and also by external technical experts. We try to bring the best science to bear in the process.