phone. how much can we learn from the data recorders that have been taken from the scene? well, the recorders and there were two taken off. one from the control cab at the rear of the train and one from the locomotive at the head of the train and they will have identical parameters they will record. that includes as you mentioned, speed, braking pressure, another train handling parameters, am percentage and things like that to tell how hard the locomotive pulling, and how hard it was braking and those kind of things. jenna: based on your experience what is your impression about what happened here with this crash? what questions do you have? well, after 22 years of accident experience i can tell you that a number of things come to mind. of course the safety board will break down the number of groups, an operations group which will handle, talk about train handling and engineer s actions.