You guys give the US government way too much credit. The one thing I know is that we cannot keep secrets very well.
I had friends in the Pentagon when that aircraft hit. And yes, it was an aircraft. The bozo who put that crap up on the internet conveniently ignores the fact that literally hundreds of people SAW the thing cross the freeway at extremely low altitude and smash into the building.
This sort of crap dishonors the people who died that day. Thread locked.