I was brought up in the north of Scotland, and where I lived was so lowly populated, it was used as a low-flying area by the Air Force, so lots of exciting aircraft used to fly over my village.
I've been lucky enough to have flown some very interesting aircraft in the past, but SpaceShipTwo is far and away the most exciting of them all.
In any aircraft you fly, you always think about what can go wrong, and you plan for it in advance. You always have back-up plans.