My recuiter had told me that at one time you could not reapply if you were not selected. However, he has since told me that it is difficult to be selected after you have been a "non-select", but not impossible. Also the Air Force is turning down much more qualified nurses than ever before due to the high competitiveness for very few positions. Therefore where a nurse was a non-select in the past due to an obvious mis match with military selection, now they are being turned down due to GPA, lack of experience, lack of volunteerism, etc. Again, this was just my experience with my recruiter, others may have a different experience.