Wife. You must be living in a Cave.

They weren't doing anything illegal, dropped their son off at school, driving home. The victim never left the car, her wife was verbally taunting the agent, no physical contact, nothing, nothing to make him fear for his safety. He shot an unarmed woman, trying to drive away, wheels fully turned away from him, not once, but three times... the last two through her open side window.

I'll bet if he could have killed the dog too, he would have.