Only way i see anyone staying safe,while staying put,in a wildefire heading your direction situation.is 1 of 2 things. 1..something in the way of a underground shelter,with no ventilation. And stocked with air tanks.and maybe a electric/solar generator and box/floor fan.or a cave thats deep enough to keep at least 90% of the heat away.and the mouth of it,walled in with the proper rock.then done up like the underground shelter.