i lived on an air force base for years...this was at high altitude and had characteristics of a satellite. what got me was how bright they were...so obvious in the sky and moving slowly, then fading. these were not airplanes...no doubt.
Could it have been the ISS?
Satellites? Get Heaven’s Above (or go to the website). You can get satellite predictions for your area. Won’t help with this event, but, maybe the next one.
One thing that Satellites do is “flair”. If you get the angle off of a solar panel in the right place, you can get quite a bright reflection off of them.
Could have been ISS with a Russian supply ship trying to catch it. Also fairly common.