Something flew over Edinburgh between 8pm and 8:30pm tonight (Mon 31). I was driving down to the gym with the radio playing pretty loud and the windows closed. We started to hear the sound of a jet engine which got louder and louder until I was sure the thing was right above us, but the only thing is, I could see the whole sky and there was absolutely nothing there. My mum also heard it while in our house and she said it was so loud that she thought it was going to crash into our house and that people were screaming outside. My sister also heard it and she was in a bar up town with loud music playing (she thought it was thunder). So just to recap it was heard by 3 seperate people scattered over an entire city, it was so loud that people could hear it indoors over loud music, it sounded low enough to scare people and it was nowhere to be seen. Does anyone here have any idea what it could have been? My theory is it was an RAF jet flying over very high, so it could be heard over a large area, and very fast, so by the time people heard the sound it had already gone, does this sound right to you? Or are the Americans testing out some new cloaking technology?