As another poster said, there were people going in and out of the building in the weeks leading up to 9/11. Additionally, ownership of the building or at least ownership of its security, changed hands shortly before 9/11. Some have theorized that the charges were installed in new smoke detectors throughout the towers.
As another poster said, there were people going in and out of the building in the weeks leading up to 9/11. Additionally, ownership of the building or at least ownership of its security, changed hands shortly before 9/11. Some have theorized that the charges were installed in new smoke detectors throughout the towers.
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