 and the 300 block of Fifth Street North. Now, they're also training in West Fargo from 5 p.m. until 9 tonight in the 600 block of Morrison Street. A Williston man will serve 50 years in federal prison for sexually exploiting children in several states. The investigation into 29-year-old Nicholas Nesdahl revealed that he used social media to groom children and con them into sending him sexually explicit images and videos of themselves.