Some of 9/11's Greatest Heroes Never Set Foot in the Towers

25 years have passed since the morning of September 11, 2001. Most people remember the smoke rising above New York City, the horrific collapse of the Twin Towers, and the families waiting for phone calls that would never come. But beyond those familiar and harrowing images are thousands of stories about what people did next. Stories that, even nearly three decades later, too many people still don't know.