And YES I do think that it is possible for explosives to be planted without his knowledge.... >>>>

How? Did you watch the documentary on this person? Do you know anything about him? I watched the whole thing and nothing was going on in those towers without his advanced knowledge, for Christ sake it was his job and he did emergency evacuation drills every three months for years, hardly the sign of a lazy person and in fact he was obsessed with his job.

Again you suggest nothing but pure speculation...It's possible aliens shot the buildings down with laser beams, I mean nobody ever said they never saw any alien space craft and they would probably have the technology to fly under radar. HHHHMMMM, maybe I'm on to something here?