An Air Force sergeant who fled while awaiting a court martial trial on child sex assault charges is arrested in Nevada. The state Highway Patrol says 35-year-old Technical Sergeant David Helm was arrested Monday night in a traffic stop in Reno. The Air Force says Helm is accused of sexually assaulting a girl between the ages of 12 and 16 in 2013 and 2014 at a southwestern Illinois air base, LaFolette, and Gatlinburg, Tennessee. He’s now also been charged with military desertion and is awaiting extradition back to Illinois.