>> mehserle takes the stand and testifies that he thought grant was going for a gun. grant was unarmed. mehserle also says he believed he was using his taser when he pulled the trigger. after a month-long trial, a jury finds johannes mehserle guilty of involuntary manslaughter. out of a maximum of 14 years, the judge sentences the former officer to the minimum, two years in prison, including time served. grant's family doesn't believe the punishment fits the crime. >> i believe he should still be in jail. he is trained to be an officer. he is trained on how to use a firearm. he is trained on how to deal with hostile situations. >> two b.a.r.t. officers, tony peroni and marysol domenici are fired. domenici is reinstated on appeal.