http://www.bluesheepdog.com/2013/01/08/ ... discharge/
Negligent Discharge – a discharge of an officer’s firearm, whether intentional or not, that was primarily caused by the officer’s failure to follow established safety procedures or legal justifications for deadly force.
Accidental Discharge – an unintentional discharge of an officer’s firearm that was not caused by any negligence or failure to follow established safety procedures.