Marvin Bush, security for the World Trade Center Complex and Dulles International Airport on 9/11?

Video highlights the financial and environmental consequences of the controlled demolition that brought down the World Trade Center towers. Also:
What did the president's brother, Marvin Bush, have to do with security for the World Trade Center Complex and Dulles International Airport on 9/11? Why were there so many power-downs and evacuations in the WTC just prior to 9/11?:
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