Don't know for sure, but I imagine there was quite a bit of public awareness
when the B-25 went into the Empire State Building during WWII.



"CV" wrote in message
...

Ron Natalie wrote:
He also used the idea of airliners flown into buildings well before
2001.

Airplanes have flown into buildings well before 2001.

Subtle shift in meaning there.

There was no widespread public awareness of the idea of them
_being_ flown into buildings before then.
CV