The day concluded with a national address from the Oval Office, setting the stage for the War on Terror .
World Trade Center Building 7, a 47-story skyscraper not hit by any plane but severely damaged by debris from the North Tower collapse, is evacuated. Fires burn uncontrolled across its lower floors for the next six hours. 9 11 timeline
As New York burned, the scale of the threat expanded to the nation's capital. The day concluded with a national address from