A Fairfax man is in a medically-induced coma after being involved in trucking accident in Wyoming over the weekend. Mike Johnson was driving a semi on US Highway 220 west of Casper, Wyoming early Saturday afternoon when the tractor-trailer left the road and travelled approximately 75 feet across rough terrain before coming to a stop. The truck did not roll, and no other vehicles were involved. Authorities suspect that Johnson suffered a heart attack shortly before the semi left the road. He suffered no head injuries in the accident, but did reportedly have collapsed lungs. He was taken to the Wyoming Medical Center after the accident. Johnson is the Transportation Director for the GFW School District.