heroes wear capes. But this one wears an Orange hoodie. When a woman fell on the tracks, a stranger jumped in front of the oncoming train, hoping it would stop in time. Tonight, video of courage and... See More
heroes wear capes. But this one wears an Orange hoodie. When a woman fell on the tracks, a stranger jumped in front of the oncoming train, hoping it would stop in time. Tonight, video of courage and kindness in action. And ABC's gio Benitez has the man who is "America strong." Reporter: This is an underground train station in Chicago Wednesday morning. People are looking in disbelief. Watch. A man is jumping around on the tracks, wearing Orange. The oncoming train, just feet away. I hear somebody yelling, she fell. She fell. The train is coming. Reporter: A woman had fallen on to the tracks. And Eddie Palacios, an off-duty tsa officer was there, heading into work. He jumped on to the tracks, thinking his Orange hoodie would be bright enough to alert the conductor. The train stopped. I don't think I could have stood on the tracks. I really don't think that I'm a hero. I did what I thought was best. Reporter: But look at how many people were on that platform. Eddie's the only one who jumped on to the tracks. That Orange hoodie, giving him confidence. My son, he doesn't go to the university of ill. He goes to the university of Chicago. And he likes me to wear his burgundy hoodie. But my wife was washing it yesterday. And this was the closest one. And this is the one I wore. So, I guess it was meant to be for me to wear it. Reporter: His son, like many of us, wondering, what were you thinking? In life, we're going to be called to task sometimes. And as a father, hopefully, I'll be able to teach him that. Reporter: Called to task. And saving a life. Now, that's "America strong." Gio Benitez, ABC news, New York.
This transcript has been automatically generated and may not be 100% accurate.