CNN The Lead With Jake Tapper May 13, 2015 20:15:00
Entities are going to be pursuing in the days ahead. but it's possibly a train may have jackknifed in such a fashion that the second and third cars were actually the ones that may have struck a heavy fixed obstruction such as the bridge support for the pedestrian bridge that passed over this location and also possibly parked train cars. we don't know that for sure at this point. >> robert halstead, robert francis, thank you both. investigators still looking for clues on exactly how this crash happened as a startling revelation the ntsb saying preliminary information indicates the train was g...