it's extraordinary to me how composed all three of them were and how well they handled what was clearly, you know, just a terrible situation. i'm always impressed with that. you know, i think we have discussed -- we're going to look at speed. there is an event recorder on the train. it will record how fast it was going. it will record whether the engineer applied brakes. they will match it up against the speed limit for the area. if it was crossing switching areas, they will look at whether there was any malfunctions on the switches. they will see that. that's a pretty easy determination to make. i think that the team will have something important to say by tomorrow night or the next day