After coming down off Maryland Heights, I wandered into town to see the sights. It wasn't long before the sound of a train horn made me run to the station to do some railfanning. I missed the first train which was a westbound mixed freight but I caught the second train which was an eastbound mixed freight. Since the coming shot was a bit blurry, the passing shot of the rear end DPU was just as good as it shows the train crossing the Potomac River and entering the historic B & O tunnel built in 1931.