he doesn't remember anything at this point. >> well we expect that to take place in the next few days. but like we just heard, memory loss is traumatica from an event but memory loss could go back. but just going into the event, but just talking to him about how he approached his job, his level of professional level, his fatigue levels will all be helpful regardless of how we cut it. >> you announced the train went from 70 miles per hour to over 100 miles per hour in the seconds before the crash, at this point it is clear what could have potentially caused it to accelerate that quickly? >> certainly that is the big question to be answered. why did that train go from that speed up to over 100 miles per hour? we need to know that. and i point out that even 70 miles per hour -- well we'll --