Police release report on school bus driver's blood

Authorities found no trace of alcohol or drugs in a school bus driver’s blood after a deadly crash in Tennessee. Chattanooga police Sgt. Austin Garrett told reporters Wednesday that the Tennessee Bureau of Investigation tested 24-year-old Johnthony Walker’s blood.Five children died in Monday’s crash. Six remain hospitalized.Walker was arrested and charged with five counts of vehicular homicide. Police said Walker was driving well over the posted 30 mph limit when he lost contro