There are three safety rules for Glocks:
If you pull the trigger, it goes bang. If you don't pull the trigger, it doesn't go bang. If you don't want it to go bang, don't pull the trigger.
I don't know why some people find them so difficult.
Another triumph of outcome-based education, I'd wager. For example, how the officer feels about gun safety if more important than actually acting in the appropriate manner. I mean, the officer was entitled to feel safe, now wasn't she? How can we be so judgemennnnnnnnnnntal?