Was 9/11 planned by the CIA or US government to throw people of of a 1 billion dollar loss at the pentagon. Yes it was the US government planted explosives in the towers and the blew up before the plane hit them. Also the plane crashing would have blown up wouldn't have been enough to melt the 2 foot thick metal beams used to build the towers. That's why the US government used thermal charges to destroy the weak points were the towers were hit.