The Night of the Juggernaut - S4-E3
Continuity mistake: In the last scene right before West walks into the boxcar, the front of the train shows the number 16, and the square area around the front light is grey with swirl designs above and below the light. At the end of this scene, the last shot is of the front of the train, and it is showing the number 8 with the square area around the front light is red.