Mirror like objects shape shifting in sky.

I was with a friend observing the landscape at Stoney Point Lookout in the Galena Territory, my friend pointed into the sky and said “Can you see that, what is that?” I looked at where he was pointing and was confused. At first we thought maybe it was a flock of birds in the distance reflecting light, but it was too geometrical and machine like to be birds. It looked like mirror like geometrical shapes moving together in a synchronized manner weaving in and out of the clouds. Kind of like how you would see a school of fish or flock of birds move together. It was too far away to get a picture.