Similar to what Mike said, we started hiring crews in the fall for the training process. It is six to nine months before they're productive operators on our trains. We started in the fall, and we also started bringing on locomotives. We did have a forecast in terms of demand, but, as I think we said in our remarks, the volumes were bigger.
The other thing that happened—I would call it an event—was the failure of the Keystone pipeline, which, when it restarted, had to operate at 80% capacity. That 20% loss created a sudden spike in demand because of a change in the pricing of crude oil. That was unforeseen. We also then reacted as a result of the changes in demand that this event created.