union off the case. let's head to nic robertson in new york. >> reporter: good morning. that union has been kicked off. they have been told that they have shared that information, made their own interpretation of the interviews that have been given and that means that they won't be part of this ongoing investigation into the train accident here. what we're learning from the engineer's lawyer is that he says that this was purely an september, that his client had had a good night's sleep the night before. >> we had a major train wreck, five cars on its side. >> reporter: we're hearing for the first time from the firefighters as they arrived on the scene of sunday's deadly train derailment thin the bronx. this morning new details about the man at the controls. the train's engineer, william billy rockefeller. his union representative saying he was nodding off and caught