We also heard the sound of northern Sweden when we lived there, but it sounded more like a train. But it also came from the sky there. I will put this sound on our page too soon...

At first we thought it was a storm or hurricane coming above the city. When we opened the door it was completely calm. We could hear over the whole sky there was a hiss and a loud strange sound and noise, it was extremely loud. It lasted more than 2 hours and during the time I film is between 2 at night and 3 at night. I could not sleep for the weird sound and i was going to open the window to hear what it was again. But there was nothing to explain how strange it was... Experiments that governments and the military are involved in...??