How do some of you know that it's a Chinese spy balloon? Doesn't everything in the sky you can't identify have to be space aliens?
As a side note, we considered 1,500 feet altitude to be safe (-ish) from small arms fire. That meant .30-cal stuff. The safe altitude for .50s was 5,000 ft.
I think that for such a thing to fly, that you essentially have to file a flight plan. If there was no nefarious intent, it would be documented.
