As can be seen, a large number of the windows of the 5th and 6th floors of WTC 6 have apparently been destroyed not only after the collapse of the WTC towers, but also before. As well, smoke seems to be emerging from WTC 6's broken windows before either tower collapsed (top).

Numerous eyewitness accounts describe explosions thought to be bombs at the WTC on 9/11. Could WTC 6 also have been a target of such devices?