Here is a recent article about three grads who went into John's Hopkin's nursing programs after graduation.
Top-flight Air Force Academy grads ready to soar in Master’s Entry program. Somewhere around 50 percent of Air Force Academy graduates become pilots, figures Francesca Moore, second lieutenant in the U.S. Air Force. Each year, three cadets are offered the chance to become top-tier nurses. Moore...
magazine.nursing.jhu.edu
I have a ds who wants to go the SA route and possibly become a doctor. I told him that if his #1 goal is being a doctor (whether in or out of the military), do not go to an SA. Sure, some cadets go directly into medical fields, but they are the exception amd it is very competitive. Add on to that, you are competing against high-level candidates and the schedule is not always set up for success in applying to medical programs.
If his goal is to serve and he'd like to pursue a medical field someday, than an SA can be a good option. If he gets to pursue med school right out of the Academy, whoohoo! If not, he can go do something cool in the military for awhile and look at med school later. He decided that he might want to fly and then go to med school. Besides flying, he is open to several career fields knowing that med school can looked at down the road. The long timeline and potential payback does not bother him at all so he is still going to pursue an SA and I think it's a good decision for him.
You need to decide how important nursing is to you and how you will feel about the very real possibility that you won't be selected as one of the 0.3% of cadets that get to go into nursing right out of the Academy. An SA isn't the best option for everyone.