Popular Mechanics recently published an in-depth article, trying to piece together what happened on that sad day where 19 men lost their lives. While no one will ever know exactly why the crew left their safe zone, this article discusses the possibility that they were trying to save a home.
If this is true, no one but the crew is to blame, since they took a risk that proved fatal. It's been said firefighters get caught up in the moment, getting a little bit braver each time they are exposed to danger and nothing happens. No amount training will change this.