Large formation of red lights spotted over Eastern WA / Western ID

Anybody else see this tonight?

Rode my dirtbike to the gym about an hour ago (roughly 10:15 PST or so). As I hopped off, I noticed a large formation of reddish-orange lights coming up from the horizon. I was facing South .. initially they were heading North, then made a gradual turn towards to East .. eventually I lost sight of them in the clouds. Probably a total of twenty of them in a sort of staggered formation .. absolutely no sound. They didn't have any strobes, beacons, landing lights, position lights, etc. that you'd expect from a civilian aircraft. Any ideas? Anybody else see those bad boys?