1910�s �Big Blow Up� remains one of the most disastrous wildfires in US history. Hurricane-force winds fanned and threw embers for miles. Full, flaming trees became dangerous projectiles as they were reportedly torn from the ground. After two days, 3 million acres throughout Idaho and Montana had burned. The devastation had a lasting effect on the United States and shaped US forest policy for the next century. But it also created a deep misunderstanding of what fire means to a forest.