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With the approach of the anniversary of the horrendous tragedy of the twin towers, there is also the return of all of the unanswered questions that no one has ever answered. Do mabey this year with the additional reach i have to people i can get an answer to the simplest of those questions. The twin towers were each hit by a plane apiece and colapsed into themselves. However at exactly the same time there was also a third building that also collapsed into itself. So here is my question, what brought down the third building?It was never hit bay a plane or any debris but still came down as if it had been professionally demolished.