I'd like to know how to find out how many dozers are deployed at the various fires in US and Canada?
I don't know if that's possible without contacting Sustainable Resources, who are the fire bosses for wildfires in Canada, in every province and probably a similar agency for the states. There's probably a bunch of excavators deployed as well.
In California the numbers of dozers deployed to each fire are reported. Where you would find a total for all fires I do not know.