I think it’s short for negligently discharged but it’s kind of stupid to shorten that. I can’t imagine what reason there is to not just write " negligently discharged".
Frankly I think calling it a “negligent discharge” is giving the officer too much credit. The gun shouldn’t even have been unholstered. Guns are used to shoot not threaten. If he was pulling the gun out then he intended to fire it and if he pulled the gun out without intending to fire it then it wasn’t a negligent discharge it was an incompetent booger hooking by a pants shitting coward.
“Negligent Discharge.”
It’s used in the firearms community instead of anything with the word “accident” because there’s almost never a reason for a gun to fire unintentionally that doesn’t involve a serious fuckup by the user.
Any ND that results in death or injury should also be treated as a felony. There are 4 basic rules to firearm safety that should be followed at all times. Any one of them should prevent injury, so you have to fuck up all 4 at once to hurt someone.
The only true accidents I know of regarding a gun being fired unintentionally involve faulty weapons firing on their own (more likely to win the lottery), but even then they shouldn’t hurt anyone because it should be pointed in a safe direction.