Bill, I also don't believe Cheney ignored specific information. There was simply "chatter in the pipes" that was ignored. I don't believe he had any idea of the specifics or even the scale of what was being planned. He was probably expecting a more "typical" terrorist attack - something on the scale of the bombing at the Atlanta Olympics or, at worst, Oklahoma City. I believe he was willing to sacrifice a few lives to advance the neoconservitive agenda. When the actual attacks killed thousands instead of a handful, he was probably as shocked as anyone.