my son just turned 18 on 12/06/2012. today he was arrested and charged with the follow. PC 186.22(A) Felony
PC 245(A)(2) Felony
ASSAULT W/FIREARM ON PERSON
PC 25400(C)(3) Felony
DESCRIPTION NOT AVAILABLE
Realistically..what can a private attorney do for him above a public defenders representation? as far as conviction and the consequences my son will have to face? he has no prior criminal record.please help....