Actually I wasn t aware of the relevance of this source to the request I came across it quite independantly Wow Scary I don t follow the CD stuff very closely Rather I read the report and it appears to be the first time the NIST will actually simulate explosive devices rather than dismiss them out of hand due to lack of evidence of explosives Has any proponents of the CD theories addressed the overpressure problem raised by the NIST The inference is that limiting the overpressure to less than the amount required to break glass will result in a conclusion that even if there were explosives they would have been too weak to impact the structure Once the definitive physics is established the next question would be why someone who wants to destroy a building during a chaotic event such as 9 11 would limit the strenght of the overpressure wave But to your point Edward Haas doesn t appear to be particularly notable so his opinion is probably not notable or reliable enough to include The NIST is though