Your body sways gently with the motion of the train. Outside the window, your surroundings are obscured by inky blackness. Lights rush by as you come to a rural crossing, signals clanging to warn of the train’s swift passage. The grounded noise of the wheels changes to a metallic jangle as the coach crosses a trestle. Drowsy from the rhythmic sway, you hear the train’s whistle. It sounds far away, a soft, lonely wail. You feel protected in the train car; confident that when you awake, you will have arrived safely at your destination.