I was an AD recruiting commander and can give you all the info you want. But basically you need to contact the local recruiter in your area and apply to be an officer. Most recruiting squadrons either have you initially work with the local recruiter or send you to one or two recruiters who specifically handle just officers. Either way they will review your application and schedule you for the AFOQT if you haven't taken it. If you meet the min criteria you can put in for the rated or nonrated boards which meet several times a year based on needs. We typically had 2 rated boards each year (Jan and July). You will interview with the Sq commander or another officer and he will write your evaluation for the board. The big unknown is that you can get anything from a nav slot to AWACS, to RPA but you can always say no if you don't get what you want. Boards are very competitive but timing is everything. It can typically take 2-6 months to get all the paperwork done so start early especially if you've been out of college a few years. PM if you want to get an idea of how your package will look based on your resume. I helped more than 20 get to UPT during my tour.