Alright I apologize for making fun of a shitty situation, I honestly did not realize how serious the situation was in TN.
However, for this to be terrorism there would have to be some sort of political agenda or motivation behind to arson. Arsonists just usually like to see shit burn and don't typically have a political agenda. If they had started the fires by burning flags that might have been terrorism, or if they started the fires because they were trying to torch the national park in protest of govt ownership of land or something (like Amond Bundy might be inclined) then yes it would be terrorism.