In 1964 or 1965 I was stationed at Malmstrom AFB outside of Great Falls, Montana. According to the GN timetable, they ran a mixed train between Great Falls and Lewistown, and back. I went to the station to buy a ticket. Agent said there's a bus in two hours, go ride that. I said no I want to ride the train. He said it never leaves on time, more likely around 6am. I was there early when the train pulled by. I waved and it stopped. There was a combine at the end. Ride back there they said. When we got to Lewistown, MT the crew went for breakfast and I tagged along. When we left the engineer said, "ride up here with us." Wow. Once a mile out of town the engineer said, "here, you run it." I took his seat. We never went over 15 mph, until we got to the main Billings-Great Falls line. The engineer said he'd better take over then.