{mosimage}Yesterday, the National Institute of Standards and Technology (NIST) released its final report on the September 11, 2001 collapse of World Trade Center building #7 (WTC7). The report states that a crucial column (number 79) failed due to uncontrolled fires burning on several floors which produced "an extraordinary event." Once column 79 failed, it "initiated a fire-induced progressive collapse that brought the building down."