We don't often think about those who work at night, while most of us are asleep. There are many men, and women too, who work during the hours of darkness. Telephone operators, firemen, policemen, rangers, engineers, bus drivers, just to mention a few. Many folks work at night, for our protection, comfort and convenience, and there are some who work at night because their jobs are too dangerous to be done in the day time when most people are out and about - just like those in our story today...