I would say a few things. One, as I mentioned before, there's the work we've done in trying to create a multi-layered system. Two, there's what we've relied on in terms of advice from other aviation authorities as well. Third, our advice and direction and guidance will continue and is continuing to evolve. I can't foreclose, as volumes go up and people start flying again, that this may not be a measure that we take. Right now we believe guidance works very well for the most part, in terms of the broad array of measures we've taken. We'll continue to assess that as we need to.
Again, I think on some aircraft, for instance, the planes that travel to our remote and indigenous communities, it's simply not possible to have physical distancing processes or standards in place.