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On 9/11 three skyscrapers collapsed. Most of you very well know about the first two towers WTC 1 and 2 which were hit by passenger airline jets. What i doubt most you you know is later that day third building also collapsed, it was WTC 7, a 52 story scyscraper and it collapsed by official story, due office fires. It was hit by falling debris of WTC 1 & 2 but it was not hit by plane. Demolition experts all around the world say it is impossible for building (especially this huge) to collapse only by fire. This .gif shows the collapse. It is vertical collapse, it doesn't lean on any direction, but vertically down, nearly free fall speed (free fall speed means it does not have any force interrupting the collapse). This building was third building in the world that collapsed due fires by official statement... WTC 1 & 2 were the first 2. Please watch this video and make your own decision about what happened that day. https://www.youtube.com/embed/LSz6Y7PwH3o?autoplay=1&hd=1&rel=0' Would to be in that kind of building what can collapse due few fires in lower floors, do you feel safe in them. There is an association that tries to justify this, http://www.ae911truth.org/. They are collecting signatories from architects and engineers around the world who demand "a truly independent investigation with subpoena power in order to uncover the full truth surrounding the events of 9/11/01 - specifically the collapses of the World Trade Center Towers and Building 7." ARCHITECT & ENGINEER SIGNATORIES TO DATE: 2,349 Think, ask questions, doubt. YOU have a right to do so!