There are a number of things that we would base the augment of that particular flight on. In the example you're using, from Vancouver to London Heathrow, one would be the collection of fatigue reports that we receive. Within Air Canada, we have the ability for flight crew to submit reports that identify particular pairings or particular routes where they've experienced fatigue, and we examine those routes. Within Air Canada, we have an internal working group that works with our pilots' association and management to look at those routes and examine them to better understand whether we need to augment them. We use internal reporting. We use science. We use information from events that have occurred to other carriers that may have reported issues of fatigue. More importantly, we do have policies for flight crew to ensure that they arrive for a particular flight well-rested and that they take the steps to ensure that they're well-rested. It's everything from accommodations—
On April 11th, 2017. See this statement in context.