One commonality between 9/11 and California fires was the metal: odd corrosion, deformation, pitting and embrittlement of steel, including stainless which usually survives fire intact.
these were fast moving fires in California that burned hot and quick, houses were reduced to ash and rubble in as little as 15 minutes. Yet the fuel in a house/forest fire can get above 2000 degrees F only when the fire is enclosed and the structure is not breached, it also takes a while for hea transference to occur, in short thereโs no way these fires should have produced such damage to the metal as was the case.