I am looking to become a PA after a career as as a PJ and was wondering what your experience was like and what steps you took to become a PA while in the Air Force?

It's a long application process. You can look the Interservice Physician Assistant Program online and see the requirements. I would say that unless you currently have a scholarship or are in some other way uniquely invested in your current schooling, I would recommend joining now, then doing more schooling on the military's tuition program. I think what helped me get into PA school was the experience I had in conjunction with the fact that I earned all my credits while being deployed and was successful in both aspects.