11 glowing orange disc flew silently across the sky. They had no visible way of propulsion and looked like bright circles.

We were sitting in living room and looking outside. One of us point out the first orange object, wondering what it was. It had no flashing lights to indicate that it was a plane and had no a single sound. It flew at a medium pace from W to NE. It was at a low altitude. After it flew out of view we noticed that there were two more following it,coming from the same direction it originated from. They glowed orange and looked like a ball but when one of them turned out their glow we noticed it was actually shaped like a disc or saucer. Many more passed going in the same direction, not changing speed and in total we counted about 11. We thought of all possibilities but could not think of any technology that was open/known to man that could move like this. It was low, had NO sound at all and had no beacons to indicate that they needed to be seen by other aircrafts. It’s a Saturday night in Brooklyn so if people are on their roof it should be seen by other civilian! s.