Is he set on enlisting or is considering trying to get a commission an option? I did ROTC and highly recommend that path if the young man had a pretty good idea of what he wants to do as a career. The air force is significantly over manned at the moment so they're turning down all of the new accession pipelines which will make it tougher to get a slot/scholarship, but it's still worth trying. Barring that, there are some good enlisted opportunities. Medical isn't bad, intel and linguist opens up some very specific post AF career opportunities, but only in a couple parts of the country. I don't have any specific guidance in regards to recruiters, just be careful and make sure that promises are in writing.