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Greg Cergol reports as the family of Bill Steckman, a longtime WNBC engineer killed at his post on the North Tower's 104th floor, gathers to honor his memory.

Today's release Facing Ground Zero: A Dateline Special revisits the world's most shocking and disturbing incident, the 9/11 attacks. 25 years have passed since the al-Qaeda extremist group killed ...

On September 11, 2001, terrorists hijacked four planes, crashing two into the Twin Towers in New York City, one into the Pentagon, and the fourth into a field in Pennsylvania after passengers ...

This gallery contains sensitive images that some viewers may find distressing Twenty-five years ago, as New Yorkers woke to crisp blue skies after a storm the day before, two planes – American ...