BLEEP BLOOP: I just saw an aircraft with callsign #SWA1288 (ICAO code #A57B8B) flying at 300 kt at altitude 8425 feet MSL at coordinates 34.1576,-118.4584.

They had that jet crankin'!

https://globe.adsbexchange.com/?icao=a57b8b
https://www.openstreetmap.org/?mlat=34.1576&mlon=-118.4584#map=15/34.1576/-118.4584