A Delaware County man was sentenced to 29 years in prison today for killing a woman in an alcohol-fueled crash.43-year-old Marc Kraft was convicted earlier this week on seven felony charges stemming from last November's crash on U.S. Route 23. Kraft slammed into another car, killing 36-year-old Heidi Hecker and injuring her infant daughter. Kraft has six previous drunken-driving convictions.