..and as has been pointed out to you by beachnut...radar proves you WRONG.
The air traffic controllers never give a consistent story.
Richard D. Hall seems pretty smart, and he talks about the
radar, so I'm guessing that it exists.
Radar isn't my thing. I might be able to use radar, given a bit
of training, but I certainly wouldn't know how to validate radar,
even if I tried, so I don't.
If Richard D. Hall says radar exists, and that it means something,
then I'm ok with that. On the other hand, if it turns out not to
exist, it wouldn't rock my world, either.