Wait... so you are telling that to take down the building in a controlled demolition, you have to destroy the outer structure... but in the same breath say that to take down the towers you merely have to heat the inner core with jet fuel?
What I find interesting is that you speak about the collapse with certainty and simplicity... and I won't won't discredit your experience in the Indiana US&R Taskforce, so please don't take this as being disrespectful, but you are basically saying to everyone here... "I watched it on tv and therefore I know with certainty exactly what happened... and believe me because I took a few training lessons in this stuff at the Indiana US&R Taskforce."
There are many of very credentialed engineers who have done more than simply watch the collapse on tv 12 years ago who would disagree with your conclusion.
Here is one example (of many) here for reference: This guy obviously spent many hours searching through the details... maybe more hours than the guys who put out the "official report".
[video=youtube_share;z8W-t57xnZg]http://youtu.be/z8W-t57xnZg[/video]
My point being... there are a lot of well thought out and researched opinions on what likely happened that day. They range from terrorists flying planes into buildings all the way to Illuminati puppet masters setting up controlled demolitions and all stops in between. I didn't stay at a Holiday Inn Express last night, but the truth is in there somewhere and you won't find it if you speak in absolutes or if you immediately discount all possibilities but one.
The guys from the 9/11 Commissions don't even speak in absolutes and have admitted to only getting partial evidence.
Yep, mighty tough to sift through tons of concrete dust. HOWEVER, I'm going by the least hypothesis here: thousands of people watched the jets fly into the World Trade Center Towers 1 & 2. No "doctored" film footage can change that. Video evidence, damage reports during the attempted evacuations of the towers, and eye-witness reports all attest to the amount of damage done to the upper structures of both buildings. Temperatures of the fires were not limited to the burning temperature of jet fuel, according to fire and materiels experts. Weakening of the outer and inner structures was sufficient to cause the weight of the stories above the damaged sections to give way, causing a collapse straight down.
Theories of demolition of the structure betray little knowledge of the way building demolition is conducted.
So we have one theory that accounts for all the observed data and expected results, and we have another theory which requires substantial prior preparation, and a massive conspiracy which has betrayed not one leak in 12 years. I'll stick with the simpler theory, you can have the massive conspiracy if you want.