Yet the coalition of 3400 architects and engineers still do not have computer inputs of NIST's mathematical models used for simulating how the buildings were destroyed. As per NIST: "This information was exempt from public disclosure under Section 7d of the National Construction Safety Team Act because it was determined by the Director of NIST that release of the files might jeopardize public safety."
References: 1. https://www.nist.gov/blogs/taking-measure/20-years-later-nis... 2. https://www.youtube.com/watch?v=iiwpj7aa9c8