We flew back to Houston from Nairobi via London Heathrow. Fortunately, everything went well. At this point in our six week journey, getting some place at a specific time wasn't a priority. We travel business class which is expensive but worth it. The kids are grown and through college so we plan to spend it all. Anyway as we were taxiing out at Heathrow I spotted one of the Concordes sitting out there. It is G-BOAB, one of about twenty ever built.