At 5:20 p.m. on the evening of September 11th, 2001, the Salomon Brothers Building, also known as 7 World Trade Center (WTC7), the northernmost building on the World Trade Center complex, uniformly collapsed in 6.5 seconds. It produced a rubble pile with a radius similar its original dimensions and approximately seven stories tall [1].

A very telling report by NewsHour back in 2002 the day after the FEMA report was released. WTC7 architect David Childs who was also part of the freedom tower debacle admits the towers shouldnt have fallen. Also some great footage of the top portion of the south tower vanishing into thin air. An interview with the DR. W. Gene Corley, who was the cheif structural engineer for the 26 person team Fema put together. They really have trouble making sense of what happened. Its great video, can somebody rip this I'm having trouble doing it.

http://www.pbs.org/newshour/bb/terrorism/jan-june02/towers_5-1.html#