He could feel sweat trickling down his back. It was a sensation he hadn't felt in a long time. A gut-gnawing fear that started in your belly and spread out through your nervous system like a virus. The kind of fear that, if you didn't get a hold on it, could paralyse you. That wasn't a good kind of fear that pumped you up with adrenalin and supercharged you to fight or run. It was the kind that got you killed.