hiding it...
 

and of course you keep your "black" projects secret by flying low level over the most densely populated area in Europe......................

Moggie--

Sometimes, things don't go as planned and you end up somewhere you didn't want to be, or you get lost (as an SR-71 driver said, you've never been lost until you've been lost at Mach 3). Sometimes, you want to see whether your new stealth gloop stands up to your pals' systems, so you go and intrude for a bit and watch what comes up to have a look. Other times, oh, I dunno -- the kids steal the keys and borrow the car for the weekend?

When I worked just outside Cambridge, we saw the odd aircraft floating about which was either not supposed to be in the UK or just wasn't supposed to be, full stop. You have to try these things out!

R