The Spencer, IA, to Mason City, IA, night-time local, is being pulled into town by the KM-31 crew. Here, the crew has just crossed the UP Mason City Sub at The Beartrap diamond. The crew is going to spend the next 3 hours being confused and indecisive on how to put cars away in 5 different spots around Mason City. Here the engineer tells the conductor what to do in the new yard east of town. Love the trio of SD30, though.