A one-time, powerful second-in-command at the L-A County Sheriff's Department is going to federal prison. A federal judge sentenced former Undersheriff Paul Tanaka to 5 years for obstructing a probe of misconduct at county jails. Tanaka's lawyers claimed his boss, former Sheriff Lee Baca, was the real ring-leader. Baca pleaded guilty earlier this year to lying to federal investigators and is hoping to avoid prison time as part of his plea.