If I was his Age I would go for it, but I would go to Texas or North Dakota and get in the Oil Field supply chain, they are paying $100 K to start. Granted he is a little old to be starting out in Life, My friends and I did it when we were 19 and quit by 23, but then again we all had to move out when High School ended back then.
If he does it and really does start making the kind of money they are talking about, make sure he knows to put a good chunk of it away for the future.