A 75-year-old man killed in a head on crash in Jefferson County has been identified as Alvin Wolter of Oconomowoc. Sheriff’s deputies say the car he was driving crossed a center line and slammed into an oncoming pickup truck. It happened Tuesday afternoon near Ixonia (ig zone’yuh) on Highway 16. Wolter’s 16-year-old passenger and two adults in the other vehicle all had minor injuries. Wolter died at the scene, deputies say he was the only person not wearing a seat belt, and an investigation continues.