it's a chilly 29 degrees as sean divari heads to the airport on the hiawatha train line. >> the rail in minneapolis is as nice and clean as can you get. >> on this day nice and clean gets down and dirty when a car full of commuters has to contend with an unruly passenger. >> when i first got on the train he was randomly yelling out and cussing. i see that i put on my headphones, and like i always do, and there are, a lot of, like, kids and older people on the train and stuff which really didn't bother me that much. the security video is silent and low quality, but it appears from the man's body language he is getting more agitated by the second. >> he was just kind of moving up and down the trains. not necessarily talking to one person, but just kind of being loud and obnoxious to anyone that was in earshot. i just sat back and kicked up my heels and said i got 20 minutes, ignore this guile, and things started escalating. >> when the train pulls into the next station, a request from a boarding passenger sends the agitated traveller off the rails. >> one specific guy got on the train