You are a giant question mark walking through the door to them. They have no idea about your work history, training, knowledge or experience and because you are from a different branch they have no way of knowing. If you had a list of Air Force schools under your belt they could relate because it is something they are familiar with. Don't take it personal. Just do the job and show them you know what you are talking about. Everything else will shake out in the process.
If things haven't changed from my time in uniform.... Your skill level is based on OJT certifications, completion of CDC's (if any), and may even have minimum rank requirement. For example, in my own 1N5X1 AFSC, I couldn't upgrade from 1N551 to 1N571 until I was promoted from SRA to SSgt and couldn't get 1N591 until MSgt.
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