I have (as far as I can tell), all areas opened up. Each one has the Outpost, Factory, and Shelter icons. But I haven't found "Porterfield the Inspector." Is he in one of the outland areas (e.g. massacre or Den)? The last inspector I found was Rock; I found him in the last area I opened, Freeside.
Also, has anyone found a way to get more than one or two soldiers at a time. Kind of tedious.