@supersan34: I don’t have specific answers for you regarding how Air Force handles medical specialties, but I assume you have already done some research on the Air Force website where I found this information:
https://www.airforce.com/careers/detail/certified-registered-nurse-anesthetist
While you wait for more informed replies here, you may also want to pose your question on the serviceacademyforums board where current and former military should be able to assist.