https://www.lewrockwell.com/2020/03/paul-craig-roberts/university-study-finds-fire-did-not-cause-building-7s-collapse-on-9-11/?fbclid=IwAR0T3A8wEvrkFfGvXZr9ojH0qv9QhEJgaLFQSLQBWdOkCRKmwsSLZk5jB5o

The 47-story WTC 7 was the third skyscraper to be completely destroyed on September 11, 2001, collapsing rapidly and symmetrically into its footprint at 5:20 PM. Seven years later, investigators at the National Institute of Standards and Technology (NIST) concluded that WTC 7 was the first steel-framed high-rise ever to have collapsed solely as a result of normal office fires.

Contrary to the conclusions of NIST, the UAF research team finds that the collapse of WTC 7 on 9/11 was not caused by fires but instead was caused by the near-simultaneous failure of every column in the building [which means it was a controlled demolition].