Several years ago on an extremely hot day, a crew of men were working on the road bed of the railroad when they were interrupted by a slow moving train. The train ground to a stop and a window in the last car—which incidentally was custom made and air conditioned—was raised. A booming, friendly voice called out, “Dave, is that you?” Dave Anderson, the crew chief called back, “Sure is, Jim, and it’s really good to see you. With that pleasant exchange....