Saw 60+ white reflective triangle aircrafts

My boss and I were driving in North KC across the bridge that goes over the river. On the north side of the bridge about 500+ feet in the air were 60+ white/reflective flying triangles. They were flying in a spiral formation. About 1 minute after observing the spiral formation, the upper half broke off and started forming a double helix. We continued driving and didn’t manage to capture it on video. My hopes in making this report is to locate anyone who saw the UAP’s and find out more about the event. There were about 30 different cars who could’ve viewed it the same time I did.