Need To Know

In Perspective: Where does 9/11 stand as a turning point...

Clip: Season 1 | 2m 25s

A decade after one of the most tragic days in America's history, Jon Meacham reflects on the legacy of September 11, 2001, and wonders how it will be remembered in the years to come.

Aired: 09/08/11

Rating: NR

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