I'm finding two things wrong with that just skimming it:

1. "...spray-on fireproofing insulation was likely knocked off the steel beams that were in the path of the crashing jets"

Problem: No jet crashed into Building 7.

2. "'I have never seen melted steel in a building fire," says retired New York deputy fire chief Vincent Dunn"

Problem: Large puddles of molten steel were discovered under the towers' debris.