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Context of '10:13 a.m. September 11, 2001: Washington Buildings Evacuate'

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Some time after the first WTC tower collapse, counterterrorism “tsar” Richard Clarke orders all landmark buildings and all federal buildings in the US evacuated. He also orders all harbors and borders closed. (Clarke 2004, pp. 14-15) The Sears Tower in Chicago begins evacuation around 10:02 a.m. Other prominent buildings are slower to evacuate. (Ottawa Citizen 9/11/2001)

Counterterrorism “tsar” Richard Clarke is told by an aide, “United 93 is down, crashed outside of Pittsburgh. It’s odd. Appears not to have hit anything much on the ground.” The timing of this event is unclear. (Clarke 2004, pp. 14-15)

More prominent buildings in Washington begin evacuation. The United Nations building in New York City evacuates first; many federal buildings follow later. (CNN 9/12/2001; New York Times 9/12/2001) Counterterrorism “tsar” Richard Clarke apparently began arranging these evacuations a short time before this. (Clarke 2004, pp. 14-15)


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