Banning foreign nationals working here from having access to the technology is the same principle as banning export of the technology to foreign countries. Those foreign nationals, presumably, are going to eventually return to their countries.

A movie is not reality.....

What "air combat?"

It hasn’t killed anybody in 12 years.....maybe SOME people can handle it....?

Ah, yes - O'Grady was the careless pup shot down in an F-16. (Were we in B/H for years?)