Video: '9/11, World Trade Center South Tower Falls - 52 Clips'

(Tuesday, September 11, 2001, 9:59:00 a.m. EDT; during the September 11 attacks, part of terrorism in the United States and the War on Terror) — The South Tower of the World Trade Center in New York collapsed this morning, 56 minutes and 2 seconds after the crash and impact of Flight 175, part of a series of four coordinated suicide attacks by al-Qaeda on the United States, collectively known as the September 11 attacks.

Video: '(1) CNN 9-11-2001 Live Coverage 8:46.32 A.M E.T - 5.00 P.M E.T'

Video: '9/11: As Events Unfold'