Two officers making a traffic stop for a driver that ran a stop sign. The officer on the passenger side has left the vehicle and has walked around behind so to make an approach on the driver's side of the stopped car. Then the driver gets out. If he had been aiming, the outcome of this one would have been very different.
The newspaper report is here.
Here's the officer's car afterward. You can see where the rounds impacted the car as well as the holes in the windshield where the officer returned fire.
When we are having a national discussion about police behavior, I think it's important to remember what sorts of situations can occur and how fast things go wrong.