Break the fire room window and soak the burning material from outside and the fire is out and the interior cooled by 1000 degrees before you could get the front door open. SIMPLE! The heat, smoke and water vapor will continue to exit the only pressure release location, the window! Stop trying to turn this SIMPLE JOB into Rocket Science! I know you are trying to make it complicated so you can keep your job, but if you DO your job, that's how you will have job security. You are doing the fire fighters in this country a disservice!