Lights in and out of formation over Orting towards Carbonado.

Group of lights came from south valley moving around each other and changing directions like a drone swarm but too large and too fast.  We watched them form triangle shapes and spread out again. Moving several miles across the night horizon. They elevated over the eastern ridge line towards Carbonado and Northern side of Mount Rainier, fading away. A few of us have phone video. Bright white lights. No sound.