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10:15 a.m. September 11, 2001: Pentagon Section Collapses

2001-09-11 10:15 a.m.

The wall where the Pentagon was hit before and after its collapsed at 10:15. The wall where the Pentagon was hit before and after its collapsed at 10:15. [Source: Jason Ingersoll, public domain] (click image to enlarge)The front section of the Pentagon that had been hit by Flight 77 collapses. [CNN, 9/12/2001; New York Times, 9/12/2001] A few minutes prior to its collapse, firefighters saw warning signs and sounded a general evacuation tone. No firefighters were injured. [NFPA Journal, 11/1/2001]