A pal of mine went for an interview with one of those "Janes: All The World Aircrew" type things once and as part of the interview process, he was asked questions like "Do you hang around airbases taking pictures in your spare time, because we do?" and "do you collect aeroplane serial numbers?". Sounded too much like "Do you hang around schools taking pictures in your spare time, because we do?" and "do you collect illegal images on your computer?"