Actually it doesn't. If you heard the firefighter that made it to the 70th floor you would have heard him say - all we need is two hoses to get this under control.
Or if you read the 9-11 Commission report you would have known that the fires did not get hotter that 250C on the steel beams. Now I have a grill that gets hotter than that.
Oh and you would have also read that the sprinklers were working in the WTC.
Silence is golden but duck tape comes in several colors.