Ran out of ammo.
A lot of years ago a friend was involved in a bar fight, I saw the whole thing and my friend started it. I went to his trial, the fix was in, a plea deal where he would get probation and a fine.
The judge asked him, "Mr. Redfield, I can understand why you might have hit the man once in anger but why did you hit him again"? My friends answer - "He was still twitching your honor".
That smart ass answer cost him two weeks in the county jail.
My first cousin, not a Katlick, retired as a Lieutenant of Detectives on the Manhattan District Attorney’s homicide squad. He picked up a law degree before he retired and went into criminal law, often representing police officers on behalf of the PBA. In his twenty years on the job he never drew his revolver once. His firm came to represent the officers accused in the shooting of Amadou Diallo. He never directly expressed an opinion about the case, but the vibes I was getting was that he had a very low opinion of the behavior of the officers involved.