Building 7 Implosion: The Smoking Gun of 9/11 Architects & Engineers for 9/11 Truth (AE911Truth) Seven hours after the destruction of the World Trade Center Twin Towers, a third high-rise building collapsed. The characteristic signs of controlled demolition were abundant. Although it received little media attention at the time, the third-worst structural … Continue reading How was Building 7 implosion a perfectly controlled demolition on 9/11?