Felony and misdemeanor vandalism. Panic? Yeah, panic.
EDIT: He was only arraigned based on an April 7th incident. So, if the coaches know about it and allowed him to go to SEAL training, it might not be complete DOOM. Nevertheless, remain braced for panic. Just remember: in case of emergency, your recruiting seatbelt can be used as a safety device.
EDIT II: They've updated the story. It appears that he was arrested for sliding on the hood of a car which damaged the hood of the car because Will Campbell is a giant human being. So, to summarize: 1) Probably not a big deal. 2) Ann Arbor police and prosecutors suck, and 3) nothing good ever happens after midnight.