Fall down PERFECTLY?!
[qimg]http://rst.gsfc.nasa.gov/Front/ground_zero_arial2_ort.jpg[/qimg]
BIG version: http://www.engr.psu.edu/ae/WTC/wtc-photo.jpg
So you will appreciate then, that all the arguments above, which claim MONTHS of preparation are necessary for CD, are BS!
The preparation etc mentioned would only apply to conventional CD, where damage to surrounding buildings must be avoided.
This of course would not apply to a criminal demolition...