7) To do a least cost pathway analysis you will first need to
                have a raster layer that you can use and an atribute file to
                use to calculate friction distance.  I had to create both.
                I overlayed the 'roads' image (boolean + ) on both the
                'militarybool' image and the 'cities' image.  I then overlayed
                (boolean + ) the resulting images on each other.

                                                                          citymilirds.rst
                                   
 

                This image combined with the attribute values file (which gave
                friction values for each class) using the function Assign gave
                us a friction values image to work with.
 

                                                    friction.rst