That will definitely help you in your interview process. You will have to go through your command first to get approved and then you will be sent to your nearest PA shop and go through a 3-5 day "shadowing" period. Once that is completed, then you will be interviewed by the PA command. Any previous experience/expertise you have...definitely let them know! It's one thing to have experience, it is another to have that accompanied by a happy and outgoing personality. If you have all that, you will be set!