Ferget ADS-B or anything of its ilk. I routinely have A-10 Warthogs overhead at my location that ADS-B has United Flights at 25 +.. Since they go in pairs, I've seen two United's at 25+k but no Mil flights. The A-10s show as something else and are 1500 to 2000 AGL. Spoofing?
S'pork yo ass. Niggerbrain.