Or you are technically old enough to be a grandfather of current serving personnel, and all of the previous mentioned things are true- well except the Dak and the crew photo. Also when there is a thread about Leather Flying Jackets becoming uniform again at 400 quid a pop and that's a tenth of your annual salary, with flying pay, when you got out of the mob.
I'm sure someone will outdo us and be a great-grandfather of...