A triggering fright. Fight or flight? Adrenaline surges. Cortisol purges normally, but with PTSD the system crashes. The sufferer lashes over a shopping cart in a parking lot. He uncomfortably tries to leave as I apologize for misdirected rage acting much like a phage: feeding, coiling, infecting everything. Emotions I couldn't experience because it made her furious, and a target knows how to deflect the blows. So why, today, did I react like that? Fifty years ago she killed my cat.