A fight on a New York City subway platform spilled onto the tracks, alarming witnesses and leaving a man injured. The NYPD says a 52-year-old man was approached by a stranger at a subway station in Brooklyn and the two got into a verbal dispute. Things escalated when the stranger pulled out a knife and started chasing the man. They struggled on the platform. Then, they both fell onto the tracks. Inside Edition Digital’s Mara Montalbano has more.