You are driving a freight train for Norfolk Southern along some lone tracks. Up ahead of you, you see a black steam locomotive in front of your train, chugging extremely fast. The locomotive appears to be a JNR Class D51, commonly spotted on Japanese railways. The tender makes it difficult to see any crew members in the cab, and the Class D51 locomotive doesn’t appear to be pulling freight or passenger cars. It’s just chugging along the tracks your train is currently on.