Some idiot (CIA agent) on some message board said all skyscrapers by law have to have small nuclear devices in them to take the building down if it suffers too much damage so other buildings would be spared damage. I have never heard of this and don't believe it for a second. You can't hide nuclear devices no matter how small, it is just not possible. But it does show that they are now realizing that denying that it was a controlled demolition is not working anymore so they are trying to make it sound like it was just mandatory law for safety reasons. Of course this is BS, but they are trying nevertheless to get this idea out there.