Clark asks what evidence there is “for pre-rigged demolition of the Twin Towers”
Let’s start with eye witnesses.
All surviving New York fire fighters (FDNY) were interviewed shortly afterwards. 118 out 0f 503 said they had witnessed blasts or explosions distinguishable from the four kinds of explosions that typically occur in fires (boiling-liquid-expanding-vapor-explosions or “BLEVEs”; electrical explosions; smoke explosions or “backdrafts”; and combustion explosions). The majority of the 118 were not asked about explosions but volunteered the information, therefore 118/503 represents a minimum number of such FDNY witnesses.
Additionally 14 policemen, 13 reporters, and 8 other first responders reported blast explosions.
https://www.ae911truth.org/evidence/eyewitness-accounts-of-explosions