I was sitting next to an old man once on a trip between Sydney and Canberra and I was fascinated by him as he was taking notes on the meal, flight number and plane ID. So I peered a little more closely, but not wanting to look like I was reading over his shoulder. I then noticed, stickybeaking, that he had a number of 000001x on his BP. Yes, two digits below 20! I cannot be 100 per cent sure of this as I didn't want to gawk too much, but I was fairly sure. I wished I had asked him about it but I felt silly and didn't want to let on I had been stickybeaking. He did, however, let on to me that he was only visiting Canberra for the enjoyment of flying.