Once Alvarez got them, he posted a twenty-four-hour watch at every interwarren tube station and instituted passports and passport control. Would have been illegal had there been laws in Luna, since 95 percent of us were theoretically free, either born free, or sentence completed. Percentage was higher in cities as undischarged transportees lived in barrack warrens at Complex and came into town only two days per lunar they had off work. If then, as they had no money, but you sometimes saw them wandering around, hoping somebody would buy a drink.