In my previous life as an airline pilot, when training to evacuate the airplane, the first officer was always taught to grab the cockpit fire extinguisher before leaving the cockpit. At one point, someone thought to ask, "what's a hand held fire extinguisher going to do when you have 20000 lbs of Jet-A burning?" The answer was that the fire extinguisher wasn't to try to put out the aircraft fire, it was to put out flaming passengers.