Let's imagine for a moment that, while involved in a dangerous situation, I heard gunfire, saw something or someone moving in the shadows and blindly fired three shots in that direction...
...only to find out that I had accidentally shot and killed an unarmed woman while she was holding her one year old infant, also injured during the shooting.
Would I go to jail?
Not if I was a cop.
(Perhaps he'll get a stern lecture on the 4 Rules. At the very least.)