Just out of interest and curiosity, how did you know it was going to Cuba?
I know that's the most likely destination given the part of the route whcih you escorted it, but could it not have gone down to West Africa?; or maybe out to the mid-Atlantic, turn around and came back from a different direction?
- there's always the Intelligence Service, but a pretty big clue is when the same airframe with the same (now knackered) geezer in the pod comes back 6 hours later through the Iceland/Faroes gap. The 'route' as you put it was used by ALL traffic on all the routes you list as far as I am aware.