I saw several crafts move both quickly and remain stationary.

I can’t believe I’m writing this, but I witnessed something tonight that I never would have believed before. I live on the edge of the City, so it is very dark around my apartment complex. I went outside with my 2 dogs and was standing still looking at the sky because the stars were particularly beautiful tonight.
As I stood there watching, at first, I thought I had just witnessed 2 planes flying way to close to each other. I don’t live far from The Ellsworth Airforce Base, so I did consider that they may be practicing maneuvers as they often do. If I tell anyone else about this, I will just be told that it was planes from the base and to forget about it.
As I continued watching, one of the objects left the other very quickly and then turned it’s lights off. Because of the way the moon lit the sky tonight, I could still see its shadow (?), not sure how to describe it, but I could still see it. I then continued to walk my dogs and counted at least 7 more of the exact same objects in a circular formation, all standing still with the (main?) craft continuing to leave it’s lights on while also remaining stationary.
After walking my dogs, I went back inside of my apartment and immediately Googled “UFO’s Rapid City” hoping there were more reports of what I saw. As far as I know, they are still out there right now. I am really hoping someone else reported seeing the same thing so I don't sound like a crazy woman.