What destroyed the World Trade Center?
If by "fumes" you mean "smoke," yes, brilliant observation. Smoke is caused by fires, not mythical beam weapons. WTC7 suffered several large fires (not small, insignificant ones as often claimed). Interesting that the very same series of NYPD photos which you use to illustrate "minor damage" also indicate quite major damage to the building's southwest face, including this one:http://www.911myths.com/assets/images/WTC7Corner.jpg