[Neo]

Well the argument has to do with the temperature at which steel melts. I agree that is highly unlikely there could be a conspiracy so deep as to involve the placing of charges as someone would eventually talk. Covering up the shooting down of an airline is within the realm of possibility, but there would be evidence on the ground as they couldn't have simply vaporized it. The fact that the initial hole in the pentagon was too narrow to accomodate a plane could be some sort of optical illusion.