America Remembers: 25th anniversary of September 11

Tonight, 25 years later, the nation is remembering one of the darkest days that forever changed the course of history. NBC Nightly News’ anchor Tom Llamas reports from New York City.

Tonight, 25 years later, the nation is remembering one of the darkest days that forever changed the course of history. NBC Nightly News’ anchor Tom Llamas reports from New York City.