Clip from 9/11 Mysteries: The WTC 7 collapse was clearly a case of a well-planned controlled demolition. Are we supposed to believe they were able to wire the building with explosives WHILE IT WAS ON FIRE, and before they had even begun picking through the rubble of tower 1 and 2 for survivors? Didn't they have more important things to be doing that day besides demolishing another building for no reason? Moreover, doesn't it take a full demolition crew at least several weeks to plan a controlled demolition of a 47-floor office building and wire it with the appropriate amount of explosives? It's not something that happens in one afternoon.