B.S. Yes they did prepare the site just as you say they did in Seattle you need it watch this video.
http://video.google.ca/videoplay?docid=-6708190071483512003
Man get your facts straight JeffT.
Big Tex said
I see no credible evidence of any type of explosives being used. I've got an open mind, and while I do think there are enough idiots and fanatics in government and elsewhere capable of acting as you theorize, I see no credible evidence of it.
Big Tex Thermite was found the only explosives capable of taking it buildings down. So yes the proof is there. As i have asked over and over explain te Thermite. No one can because there is only one explanation. YOu also need to watch the video.