I have considered that many just want to serve. However, busting out of UPT is at the 22/23 yr old mark. It is no longer 17/18 and applying for an SA.
They have spent 4 yrs being trained to lead as officers in the AF. In the AD world, it is no longer about what they want or desire, but what the service needs.
You are taking a leap that they no longer want them. The fact is they no longer want them in the flying world, but may want them in the AF.
Again, AF determines it if there is a commitment owed. AFA grads owe commitments to the AF. That is just the facts. It is not personal, it is business. The AF's business is to meet C status in every aspect, not to guarantee fighters or Intel or any career field for that member.
I know 3 people personally, who jumped ship from the Navy to the AF. It does happen, but out of those 3, all of them came to the AF after their Navy commitment ended. They all flew fighters with the Navy and the AF.
I am not trying to be antagonistic. I am just trying to say, if they bust UPT, it is not their decision to say "well, fine, I want to serve in the Marines".
The AF has 1st dibs, and they can keep them.
The Marines might also say, sorry, we're full, and not take them.
In other words his desires are not top priority when it comes to the AD military. Even more so with the fact of RIFs/VSP/SERBs. You serve at their luxury.
It appears that your child is at the AFA, why at this point are you interested in the worst case scenarios? If he is a C2C and just got his UPT slot, he still has 18-24 + mos before this would ever be an issue.
That is a heck of a lot of time. I, myself can only take today and maybe tomorrow, I can't think about 2 yrs from now regarding the what ifs? What ifs of the future to me equates wishing my life away.
Again, good luck, my best thoughts, I never meant to be antagonistic, just meant to say my own opinion. I am sorry you took it the wrong way.