The old crow that I was once married to was also an RAF officer and she could navigate. However, when I drove (which was most of the time) I did like an overall impression of the route (liken it to a flight briefing if you will) but she insisted on keeping me completely in the bloody dark and went into an exceptionally foul mood if I even dared to ask to look at the map.
Hopefully some poor downtrodden sod is suffering at her hands as we speak. I would have hated to have had all that angst to my self.
