Mr Medina,
You can choose to re-enter the unit as a new applicant and go through RCT/OSUT training as you did when you first joined.
Or you can choose to re-enter the unit as a returning member and sit-in on training (including OSUT/RCT) as desired to feel comfortable.
Either way, head over
here to submit your application, and one of our Recruiters can talk to you one-on-one.
Regards,
TSgt Hardman
S-1 Chief