I posted the following last night:
https://www.empowher.com/ask/vaccination/does-my-friend-need-rabies-shots
Since then, my friend talked to a "rabies" expert at Maricopa County Health Clinic in Phoenix and found out that he just needs to get a tetanus shot. Fortunately, he doesn't have to go through having rabies shots.
I did happen to do a little research while my friend was waiting to hear from the rabies expert, and I found some pretty good info on the CDC web site: http://www.cdc.gov/RABIES/exposure/postexposure.html