ABC News Documentary '9/11: United We Stand — 25 Years Later' Premieres September 1
Originally published as: ABC Marks the 25th Anniversary of 9/11 With a New Documentary
25 years ago this month, America and the world were shocked by attacks on the World Trade Center and the Pentagon that left thousands dead and the nation in mourning. The events of September 11, 2001, altered the course of American history forever.