Here's another tip from a grad and a former UPT IP...DO NOT EVER talk about how you want to finish UPT and get out of the AF as soon as you can to go to the airlines. Like Deuce said, there are plenty of people along the way who can break your heart. If anyone at UPT even THINKS you're not all-in, they will make your life hell, and there are many easy ways for UPT IPs to make that a reality. We always said that at UPT, you're only 3 rides from the beach, because all it takes is 3 bad rides and you're gone, and it can happen in as little time as one week. If you're in AF pilot training, it should be because you want to be an AF pilot, period.
Now, having said that, once your committment is up, I and everyone else will salute you smartly and thank you for your service if you decide to leave.
Here's another tip, once you're a firsty, STAY OUT OF TROUBLE or be really good at not getting caught. You do not want to graduate late or spend your last year in your room...just sayin'.