BLEEP BLOOP: I just saw an aircraft with callsign #ASA961 (ICAO code #ACC774) flying at 278 kt at altitude 4700 feet MSL at coordinates 34.1739,-118.4360.

That plane was making good time.

https://globe.adsbexchange.com/?icao=acc774
https://www.openstreetmap.org/?mlat=34.1739&mlon=-118.4360#map=15/34.1739/-118.4360