You were in the right thread when you were posting Q & As. Tigerman pretty much answers the questions. Hes been busy so you will just have to wait for response from him or somebody else for the time being.
There is none. It doesn’t matter anyway. There are 4 territories surrounding it. Planes flying over take at most 2 moves from one surrounding territory to the other. However, all 4 territories are 1 or 2 spaces from each other anyway