GILLETTE, Wyo. — A 60-year-old South Dakota resident died Tuesday, June 9 in a two-vehicle crash on Wyoming Highway 450, the Wyoming Highway Patrol reported. Authorities identified the motorcyclist who died as Stacy Christianson. The crash happened around 12:11 p.m. near milepost 62.1 in Campbell County. Christianson was driving a Can-Am Spyder Roadster motorcycle east behind a Ford F-250 truck that was pulling a flatbed trailer, a highway patro…