Your medical paperwork will be reviewed. Most of this you print out from the Appointee Kit (Airmanship Options/Medical Screening) but they may also want to see your immunization records.
Also, if you have a "Check on Entry" waiver for a medical condition, they will review all the information you bring and evaluate your suitability for training (this is rare, and you would know if you are in "Check on Entry" status).
Insider