What do we know about fire fighting?

"What do we know about fire fighting?, What do we know?, We know everything, and we know nothing. But it does not matter, for behold, I have a secret weapon that puts out fire. And it is better than anybody else's secret weapon". (Murdock, EP 3-04, Fire)

But in reality Firefighting is the act of extinguishing destructive fires. A firefighter fights these fires to prevent destruction of life, property and the environment. Firefighting is a highly technical profession which requires years of training and education in order to become proficient.