The Clover Mist fire, one of seven major fires burning in the park, would eventually consume more than 140, 000 acres by the end of that summer.

NPR: Ex-Firefighter Relives Yellowstone's 'Black Saturday'

But in 1988, he and other firefighters had been brought in from Hawaii to fight the Clover Mist Fire, which was burning on the park's eastern boundary.

NPR: Ex-Firefighter Relives Yellowstone's 'Black Saturday'