Two hours after firefighters started applying foam to the fire for the first time, Hicks, operations section chief at the scene, said it was "visually" apparent to him that the technique was working.
Source Sacramento Bee
Jan. 22, 2003
Two hours after firefighters started applying foam to the fire for the first time, Hicks, operations section chief at the scene, said it was "visually" apparent to him that the technique was working.