knoxville IA_DSC0186_734

knoxville IA_DSC0186_734

Jason Johnson with crew chief Philip Dietz following his victory at the 5-hour ENERGY Knoxville Nationals. (Mark Funderburk Photo)

Jason Johnson with crew chief Philip Dietz following his victory at the 5-hour ENERGY Knoxville Nationals. (Mark Funderburk Photo)