When driving through a certain town twice now I’ve heard and high-pitched sound. The first time it went on for 10 seconds off for 10 seconds. I turned off the radio the air conditioning all electronic and the car was turned off the sound continued until I turn the car off. The second time driving in the same area I heard the same high pitch sound this time I was on the phone with my sister-in-law and she heard it as well. This time the sound lasted about 30 to 60 seconds and then stopped completely. I do a lot of driving and the only two times I heard the sound I was in the same location each time. Which it leads me to believe that it is something outside. Does anyone have any idea of what this could be?
Did that sound come from sky or something? And what was it similar to? Maybe it was just alarm horns for fire bridages?
Where was this please? Did you hear it in other towns too or is it really only there?