A train carrying passengers over the Mystic river in Boston caught on fire Thursday morning.
With 200 riders aboard, flames and smoke rose from the train during rush hour.
Passengers walked calmly towards the exit at first. The fire became more serious and commuters fled through the windows.
Video of a woman leaping onto tracks with another passenger, which she tries to catch.
Jennifer Thomson-Sullivan recorded this drama on her cell phone.
“There was this loud boom and then the train comes to a stop. There was this flash of fire at the front of the train car. I was like, ‘This whole car is gonna go up in flames,’”Thomson Sullivan.
To get to safety, passengers walked along the tracks.
The blaze began after a piece from the train was thrown off and came in contact with an electrified third rail.