A Columbia County jury has found a 43-year-old truck driver from Indiana guilty of injuring 20 students when he smashed into the back of a school bus last year.  Sentencing for Wayne Murphy will take place after a presentence investigation report is submitted.  Murphy was convicted on 30 counts, including 10 felony charges.  He had been accused of taking too much anti-anxiety medication before driving his semi-trailer truck that day in May 2018.