Professor Hulsey found that office fires of the kind in building 7 on 911 could not have produced sufficient thermal expansion to cause the crucial girder to fail. It's impossible, he found. And more significantly, He and his team found that NIST's explanation does not account for what anyone can see on video, which is that the entire building came down all at once. Not in a progressive collapse, but in a total collapse. Something else, therefore, must have triggered the downfall. (09:32–09:43)
CLAIM
Asserts that Hulsey's team found NIST's explanation does not match video evidence of Building 7's collapse.
This is an excerpt from a raw transcript. The assertions have not been audited or verified. Tap the video to view the source footage and understand the context.