A Bristol Tennessee Man Is Facing Charges After His Car Struck And Killed A Man Walking Along Highway 421 In Sullivan County. It Happened Yesterday Morning. 53 Year Old Charles Callahan Ii Is Charged With Vehicular Homicide, Dui And Tampering With Evidence. The Tennessee Highway Patrol Said Callahan Was Driving South On Highway 421 When His Car Veered Off The Road And Struck 58 Year Old Jeffrey Rouse Who Was Walking Along The Roadway. He Was Pronounced Dead At The Scene. His Body Has Been Sent For An Autopsy. Callahan Remains In The Sullivan County Detention Center Awaiting Arraignment.