This encounter happened when I was about 8 years old. My father was stationed in Germany (he's in the military). I had a lot of friends, my best one being Chris, who experienced this with me. It was about 8:30 PM, which was a little late for us to be outside, because we were young. We were just walking around, being bored. I kept seeing something black like a shadow zooming between buildings. I thought this was just my imagination, so it didn't bother me --that is, until Chris said, "Hey, did you see that?" I knew exactly what he meant by *that*.
Yet, this wasn't too freaky either, because there were bats in Germany, and there were pretty gosh darn fast. Sure, it seemed to be following us, but it still didn't really creep me out. This was getting from normal to creepy. I knew what I saw. I wasn't hallucinating, but I saw the same shadow IN BUILDINGS. We lived in housing, so there were apartments, and you could see inside the stairwells because the outside door was glass.
Chris said he had seen it inside buildings as well. This is when things got from creepy to run-away-right-now creepy. The shadow was still following us, I was sure of it. But we didn't stick around after seeing the black shadow zooming in the buildings. We ran into our stairwell (his apartment was above mine), and that was basically the end... Or so I thought...
To this day, I don't have an explanation of the shadow. We have shared the story to many others, but only some have believed us. The weird thing is, after Chris had moved and we were separated from each other, I have just kept on thinking that Chris has seen the zooming shadow again. I don't know why, I just do...