concern about the fact, this was the maiden voyage the first on rails that were retrofitted. any concern about that? >> well, i think that there has been a lot of talk about ptc or positive train control. we will be looking at all aspects of signals from -- that are related to this accident. and ptc will certainly be one of them. i think that as many of us know, ptc can prevent. types of train accidents. and we'll be investigating very carefully to see whether it could have been prevented, the destruction that happened just behind us here. brian: thanks, bella. ainsley: thank you, bellla. hopefully we will get answers soon. meanwhile we will hand it over to jillian who has headlines for us. ainsley: get you caught up with headlines. an iraqi refugee who wanted to blow up two houston malls will spend 16 years behind