Its entertaining working where I do. You can be driving along the road quietly to work, and hear heavy rumbling. So you might look around, to see where its coming from. Sounds like a lorry, and it must be close. There is a moment of panic, as it gets louder, and there is the urgency to get out of the way of the lorry that sounds like its about to hit you.
Can't see it anywhere.
Then you realise that you've just been buzzed by a
Tornado doing some low-level manouvers. Cheered my morning up :)