Twitter user King Arthur & Excalibur posted an image of a Sean the Sheep hot air balloon and joked: "Oh c***...this is not my fault with the #SpyBalloon #UFO #Meme as someone sent it to me and it ...

They've used all sorts of techniques, from the German army using pigeon-carrying cameras to the US releasing hundreds of balloons in the hope they would float across the entirety of Russia and get ...