Aifier Bishop News Today

Philadelphia. you spoke with a close friend of brandon bostian. you asked him all the tough questions. what did he tell you? >> reporter: he says there must be more to the story than what were hearing if its the brandon bostian he knew. aifier bishop was a flag man on the route and he worked with brandon on hundreds of trips up and down this corridor. he says he never saw anything that would alarm him. >> good engineer. great engineer. he was on point. if there was something he didnt know he kne...