Some years ago, I also used to fly Andover XS596 into Kubinka (Russia) to conduct Open Skies missions. They were seriously good fun trips, though, the food and the accommodation were questionable! On one occasion we flew all the way up to Olenyagorsk (Murmansk) to overfly and photograph the Russian submarine fleet. Regrettably, the sky was overcast with low cloud and we didn't see too much. Our hosts, the RU Naval Aviation Wing (Backfire crew), entertained us very well within their Officers Mess. The UK no longer has the equipment to conduct Open Skies Missions and so the Dutch AF (or it might be the Belgian AF, can't remember) carry out those missions on our behalf.