Well, Mr. Cole is back and he's packing heat! Any other "debunkers" out there willing to admit you were wrong? We've already accepted your apology in advance National Geographic.
Keep in mind while watching this that the MIT article "Military Reloads with Nanotech" stated that nano-thermite "can increase the (chemical) reaction time by a thousand times."
The scientists report that the material found in the WTC dust is mixed in a sol-gel matrix with organic components and as an April 2000 report by Gash et. al. about the sol-gel process states, "Once dry the (hybrid inorganic/organic energetic composite) material burns very vigorously and rapidly with the evolution of significant amounts of gaseous species."