BAKER NOTABLE
Since it crashed so close to Fullerton Municipal Airport, checked all departures in the last couple of hours on flight aware. Only one remains unaccounted for. So I think that is your crash aircraft. A 2000 Vans RV-6 owned by Michael P Divan. N64GH.
https://globe.adsbexchange.com/?icao=a86380
Possibly a current. or former, LA Fire Captain.
https://openpayrolls.com/search/michael-divan