Cameras were focused on bldg.7 when it was
thought it might collapse. None caught the explosions? That sort of thing is hard to hide. Delayed controlled demolition? Think of all the people that one alone must have involved, much less the entire operation. A cast of hundreds or thousands yet no one has been caught or even suspected. One of these evil-doers will surely repent and come forward eventually. Oh, wait, one already has. But, of course, that was a fake confession intended to muddle things up further. Maybe it was suicidal gremlins with sawzalls and lots of blades and batteries.