If the firearm is handled properly, it will not happen.
Deputy Dufus screwed up twice. It's lucky he didn't kill someone.
I conceal carry a Glock 19 everyday...i don’t understand how this happened. The odds of his clothing getting tangled at just the right angle to pull the Glock trigger has to be astronomical. Some thing tells me he was careless with his trigger finger. Only way that gun will fire.
Rarely, but sometimes, there is a mechanical failure. There are 3 safeties on a Glock, but there's a very, very, very remote chance that the discharge wasn't from operator error.
Really lucky.
His problem most likely can be boiled down to this: Familiarity breeds contempt. He is guilty of contempt of firearm and was shot for it.
The pertinent question is this: what the hell was your finger doing on the trigger, you moron?