and i m rosemary church. just ahead, moments of terror for passengers on a united airlines flight after a man allegedly attacked a flight attendant and attempted to open an emergency exit. more on this and a string of unsettling article incidents ahead. in ohio, investigators have gun looking into a second norfolk southern train crash, we will discuss what went wrong and what needs to happen to make rail systems safer. plus, kidnapped in mexico, cnn learned the identities of the four americans taken at gunpoint as the fbi asked the public for help finding them. live from cnn center, this is cnn newsroom with rosemary church. thanks for joining iu.s. aviation safety is in the spotlight after a series of near disasters, one man was arrested monday for attempting to open an emergency door on a plane. after he tried to stab a flight attendant in the neck way broken metal spoon. that man francis for res was tack kel by passengers zip tied according to a woman on the flight a
make the rail system safer? do you think well, that s great question, because already the ntsb, the investigators for transportation accidents in the u.s., of course, has already said in the big derailment in new palestine ohio with the hazmat cars and the big fire, that the railroad did not violate any regulations and laws. they had two people working the train, they were only required to have one, and the cars and and the makeup of the train was not long enough to kick into effect some higher regulations, so if we can still have, you know, huge disaster such as that, and no regulations or rules had been broken, that says that the ruleses and regulations have to be strengthened. we have to have more inspections of the track, we have to really look at what are the requirements for a high hazmat train, tran with trains way lots of the cars of has mats in them and we have to look at the