I was there (at the time, in front of my TV I mean) and I clearly remember the first witnesses being interviewed by reporters: as soon as a witness would say something not fitting the official narrative, it would never be aired again. For example regarding the pentagon one eye-witness said he saw something like a big missile on which wings had been strapped. I saw that on TV. I clearly remember it. Now I'm not saying it's not a Boeing that hit the Pentagon: what I'm saying is that it's very weird that all these ramblings from these drunkards mistaking, say, a Boeing with a "missile with wings strapped on it" were basically aired once then erased. I'm pretty sure that guy was both drunk and of course because the plane was going fast, the mistake was made in honest faith (you, too, would certainly mistake a Boeing for a missile with wings strapped on it).
Same thing with people saying they heard explosions in the WTC: as soon as they'd mention that, they'd be cut off by reporters and these people would never be interviewed again and their account never aired again (FWIW I don't believe in a controlled demolition but I do believe in narrative manipulation).
After these oddities of course we all know totally normal things then happened: for example IIRC one the rare flight that was allowed to happen when no plane were flying in the US was a flight evacuating members of the Bin Laden family.
And then the wars that followed. Made perfect sense. No fabricated evidence. Guantanamo and the like: all perfectly cromulent.
When you take all this, honestly that we don't have any footage of that impact just seems on par for the course.