A Round Rock resident saw a light speeding around very high up in the sky and was able to snap a picture of it, and share with TUS:
saw a flying sphere way above an airplane and was going super fast. Was red then stopped, went back and turned green and purple. I lost it for a second then it came back and it was blue. Caught the blue.
Did you see this object as well? Sounds like it was way too high to be a drone, but you never know. If you can verify this sighting, please share your encounter!