From what I have heard, a pro rec is a professional recommendation by the boards for approval. From there, depending on how your recruiter handled your packet, you would submit your prt, and meps and that would then determine your final select. Some recruiters (like mine) had me do everything before submitting. I did the application, epsq, then prt, then astb, then meps. Some do the app and astb, wait for pro rec, then submit the rest. Some people take longer then others. I have taken a little over a year and a half to get it all in and am going to the July boards.