A ground tremor would have been mentioned surely by witnesses if it was anything seismic. So yeah, I'm thinking some aviation related thing that is being kept hush hush.
Maybe some f-117s stretching their wings a bit? Apparently a bunch were reactivated over in CA.
Sonic boom?
A ground tremor would have been mentioned surely by witnesses if it was anything seismic. So yeah, I'm thinking some aviation related thing that is being kept hush hush.
Maybe some f-117s stretching their wings a bit? Apparently a bunch were reactivated over in CA.
https://www.zerohedge.com/markets/stunning-video-show-supposedly-retired-f-117-nighthawk-stealth-action
117s are subsonic.