BLEEP BLOOP: I just saw an aircraft with callsign #NKS1653 (ICAO code #A88DF0) flying at 281 kt at altitude 5325 feet MSL at coordinates 34.1621,-118.4793.

That plane was making good time.

https://globe.adsbexchange.com/?icao=a88df0
https://www.openstreetmap.org/?mlat=34.1621&mlon=-118.4793#map=15/34.1621/-118.4793