A man is surfing our train on crutches. Really struggling. Passengers near the doors needed to get up to allow room for his passage at both ends of the car. Plenty of seats available, but unless he's armed, too many men on the train for him to engage in predatory behavior. Well, I guess that's not true, but it's crowded enough that there are plenty of men in every car. He isn't asking for money, just trudging through the train on crutches. WTF?