Snow storms, like many things in our industry, are a constraint. We can have many constraints. Constraints are what drive disruption and drive unintended consequences in a safe and effective journey.
If you look at an operational control centre, it's that team. It's their 24-7 job to look ahead 12 or 24 hours, and out to the five-day window that we have with our network schedule. Their job is solely to try to see as far ahead as they can, take a look at constraints—whether they be fleet constraints or scheduling constraints—and provide an optimum experience for the travelling public and our guests.