It's been an unspeakably bad week throughout much of fire-ravaged Southern California. As of Thursday, the toll looked liked this: 500,000 acres burned; 1,800 homes destroyed; 57 people injured and at least six killed. As all of this transpires, a new book has come out that gives you an inside look at firefighters who make their living battling natural wildfires. On the Fireline: Living and Dying with Wildland Firefighters is written by Matthew Desmond, who spent four years tackling these blazes. And, in this lengthy free excerpt you get graphically exposed to the risks and losses that they experience professionally and personally. It certainly makes you feel for the firefighters on the frontlines this week, and we wish them and our fellow Californians the best.