BLEEP BLOOP: I just saw an aircraft with callsign #SWA1259 (ICAO code #A61987) flying at 311 kt at altitude 8275 feet MSL at coordinates 34.2061,-118.4711.

That's, like, super fast.

https://globe.adsbexchange.com/?icao=a61987
https://www.openstreetmap.org/?mlat=34.2061&mlon=-118.4711#map=15/34.2061/-118.4711