SayUncle proposes an addition to the four rules because of this incident here. I’ll vote yes on that one, but one good practice to get into with Glocks is to remove the holster with the firearm in it. My Glock never leaves the holster unless it’s going away unloaded for long term storage. I’m not a fan of removing a gun from its holster just because.
I use this holster, which is easily removed with the gun in the holster. It requires a quality belt, of proper size to match the clip, because if you don’t it can come off (I’ve had it happen) and the next thing you know there will be a holstered gun at your feet. The leather loops are more forgiving. The good thing about the Glock is also the bad thing about the Glock. If you pull the trigger, it’s going to go bang.
This guy now finds himself facing charge of reckless handling of firearms under the Virginia Code, which is a class one misdemeanor. That won’t make you a prohibited person for the purposes of firearms possession, but I doubt he’ll keep his license to carry.