ATP, Air National Guard, or Reserves?
One of these things is nothing like the other. That alone should make it an obvious choice. If you qualify and can get a guard/reserve pilot slot(not easy to do btw), why in the world would go to ATP and "Pay" , when you can GET paid for going to USAF flight school and come back HOME 12 months later with an FAA commercial ticket automatically. Then get paid to go train on an advance aircraft.