It’s only happened once in my life, but I didn’t have any visual flashes or anything of the sort, just the sound.

I was sleeping one night about 16/17 years ago and heard something that I could only describe as a UFO. I didn’t get a chance to look out my window, but I heard this rapidly pulsating droning sound VERY close to the roof, as if it was tracking me. I heard it fly overhead where my bed was, and it paused for a few seconds, but the sound could still be heard.

Probably lasted for about 10 seconds before it rapidly flew off. I’ve never heard anything in my life that sounds anything like this; it gives me the chills just remembering what I heard that night!

I was scared completely shitless.

This is why you should never adopt Google services, there’s a high chance they will kill it off given their awful track record.