How do you get into the ASA program?

[**DONOTDELETE**]

once you are accepted into FSI, do you then have to apply to the ASA program, or are you already in when you are accepted to FSI? If you do have to apply, is it competitive? I am planning on going the instructor route, however, what happens though if I am not hired as a CFI by FSI? Is that it, did I just blow my money (I know it's not blown because I'm a CFI and I'll have options)?
Thank you for your help. Safe Skies