Originally Posted by CodeR70

You have a good point? But people did hear explosions. I have seen those interviews where a guy talks about "boom boom boom". I think it was used many time by "truthers" as well.

On the other hand, sound with news footage? Did you "hear" the Twin Towers fall? There is more footage where you see them fall in silent then footage with the real sounds (those of the cameras close to the buildings).