Guns don't shoot themselves.

The deputy's gun fired one shot, missing the dog and hitting the child.

Let me fix that for you, Mr. Journalist.

The deputy fired one shot from his gun, missing the dog and hitting the child.

I'm not even going to consider whether he actually needed to shoot the dog, but we do have a clear rule #4 violation by the deputy.

*If you're law enforcement and afraid of dogs maybe you should reconsider your chosen profession. Seriously.