On a return trip to Vietnam in 2000 with my daughter, we were sitting on China Beach where more stars than I'd seen in years were visible as it was so dark.
We watched what we were sure was a satellite pass overhead from south to north, so in polar orbit, an hence likely military. Given just the numbers, I said, the chances are better than even that it was one of ours.
Everything Good....
I've seen them myself. Very cool to watch and imagine them going about their rounds.