Re: Well . . .
There is a tiny footnote. It's estimated that 150,000 people visited the World Trade Center Towers -- daily. Then there are all the evacuating people, along with hundreds of rescue workers and police officers, at street level, and the passersby. How close was too close? As the buildings collapsed, the debris, all sizes, would be cast from the base of the structures at bullet velocities.
I think it adds up,
Dan