A number of individuals who worked in key positions apparently knew that the Twin Towers of the World Trade Center were going to collapse before the two buildings came down on September 11, 2001. These men talked with colleagues about their concern that the towers might come down, and some of them issued stark warnings about the danger and ordered people to get away from the World Trade Center.
Although their warnings have, in some cases, been credited with saving lives, the behavior of these men is, on closer examination, surprising and quite suspicious. This is because the general opinion before September 11 was that the Twin Towers would survive being hit by planes and the outcomes of previous high-rise fires should have led the men to think the towers would easily endure the fires they suffered on September 11 without collapsing.
Studies, which many firefighters and experts were aware of, had determined that the Twin Towers would withstand being hit by large jet aircraft. Furthermore, no steel-framed high-rise building had ever collapsed due to fire before 9/11. Steel-framed skyscrapers, like the Twin Towers, had survived fires that were larger and burned for longer than those that occurred on September 11. Unsurprisingly, then, it never occurred to most experts and most of the firefighters who responded to the plane crashes at the World Trade Center that the towers were in danger of coming down.
If the collapses of the Twin Towers occurred without the use of explosives, as official accounts have claimed, then these events were unprecedented. Nothing remotely like them had happened before. Why then did some experts and emergency responders warn--sometimes with great conviction--that the towers were going to collapse?
We clearly need to examine why these men predicted that the Twin Towers would come down after the hijacked planes crashed into them on September 11, especially since some of them had specific expertise or professional experience that should have made them less likely than most people to anticipate the collapses.