My 16 1/2 year old son received a DWI - First Offense and never been in any other trouble. He blew a .15 at the police station- not sure what he blew roadside. I am okay with him being fined/probation/community service - I just don't want this to affect him long term. Do I need to hire a lawyer for his court date or as a first offender, does he have a good chance at having this expunged off the record at 18 as long as he stays clean?