okay. you know this stretch of track really well. i understand there was a 50 miles per hour speed limit. could a train that train 188 given the number of cars, speed at which it was traveling could it have safely made it around the bends, was that even a possibility? what the 50-mile-an-hour speed was what we call a permanent restriction meaning that the radius and the various other features of the track, there is a formula that the track engineers use. and they factor in a safety factor. so 106 miles an hour was that impossible? did it never have a chance of surviving? well, that s not my area of expertise. but i would say it s 106 miles an hour is probably not possible. can i ask you about the ntsb reports investigating that something may have hit the wind