transportation, like another train, to get these people further down the line. this train was going between chicago and seattle, average speed about 50 miles an hour. it takes about 45 hour to take this trip. it's a pretty long journey, a scenic one through the big sky area of montana and beyond. we are just hearing from passengers who described this terrifying scene as this train derailed. >> i awoke to it derailing and i would describe the experience as kind of like extreme turbulence on an airplane but loud ir. there was kind of a lot of smoke smell and it was -- the first thought i really had when i woke up was, oh, my god we're derailing. it was probably 10 or 15 seconds of rocking back and forth and tons of noise and then we came to a stop and, really, it was -- we didn't know what was going on.