Flash fire." She turned her head as far as she could, trying to look at him. "I don't know what that means." He shifted on the branch. "First time I was on a submarine, we had a flash fire. It's a combustion explosion. A flammable mist builds up in the air, then suddenly, bam. Think super high temperatures and a rapidly moving flame front. It kills by asphyxiation. Burns up all the available oxygen. It's devastating.

- Dana Marton