I have a shapefile of United States counties. I have two counties that I would like to highlight. I would like to draw a straight line distance between them. By straight line, I mean, if you were to lay down, say, railroad tracks that go straight. I want to know which counties this line would pass through.
For example, suppose that I would like to draw a line between San Diego County, California, and Cook County (containing Chicago), Illinois. I would want to know which counties this line would pass through. For example, I imagine it would include counties in California, possibly Nevada, and so forth until Illinois, and obviously not include counties in states like Texas, Oregon, Florida, or Vermont.
I use ArcGIS and ArcMap 10.1. I would very much appreciate any help that you could provide!