Hello Mary,
It's worth trying to understand what sort of Engineering he's interested in doing - our profession is pretty broad.
There are many excellent universities in the USA (and abroad - given that a university education is quite expensive in your country, it's worth looking elsewhere also - the English speaking world alone covers the UK, Canada, Australia and Ireland, all with some excellent aeronautical engineering departments), outside the English speaking world France, Germany, Brazil and others also do well.
For example, if your son's interests are in space engineering, systems, helicopters, flight test, operational management, maintenance - there are departments with specialisms in all of those. It can be a little hard to work out from the outside what those are, but a good route is to look at departmental websites and see what the professors research interests are. They tend to teach best what they research.
On that subject, there is a clear hierarchy amongst university departments - the most prestigious tend to be those with big money research going on, the next tend to be those with "okay", research, then you have the high quality teaching-only universities such as Embry-Riddle, and finally the community colleges. Don't get too hung-up about these differences, but it's useful to be aware of them, and they can certainly affect the academic fees in the USA (other countries tend to be more uniform - here in Britain, the fees tend to be pretty much the same at any university, regardless of quality).
I'm reluctant to recommend specific universities in the USA, just because there are so many, and those I've had personal contact with I only really know through particular specialisms, and are only a few of many. If your son fancies Britain for 3 or 4 years (more likely 4 for a BEng or 5 for an MEng, since the standard of maths and science in a high school graduate in the USA tends to be rather poorer than in the UK, so starting in the foundation year is likely) I can recommend looking at
Southampton, (
Glasgow),
Loughborough (which is especially good for students with a strong sports interest),
Brunel and
Liverpool. All are world class and would present no problems in returning to work in the US aerospace industries.
As has also been said, the US armed forces offer excellent in-house undergraduate and graduate programmes - all four of the main services do this, and all four offer excellent career routes. Of course, an armed forces career is not for everybody, particularly in the current uncertain times, but this is well worth looking hard at.
G