I've been the Range Safety Officer in my unit and have been in the ranks shooting on military ranges for 22 years.
In larger groups safety is a concern.
Now, taking that for what is meant, how do you conduct operations on a range which is live at all times with loaded guns in the possession of all participants, including instructors?
I shoot at a public range which has no RO and I find it interesting that some come with guns in cases only, only load them on the line, and then return them unloaded to the case when leaving. Yet it's a CCW state and I brought at least one of mine in a pocket or belt holster - loaded. I leave with it loaded after shooting it. I carry it loaded on me down range and shoot other guns with it on me loaded.
Well, think about it. Got up in the morning, put on my pants, put on the gun, when about the daily business armed, like, buying more ammo at the store on the way to the range, filled up the car armed, drove it armed to the range and unloaded the gear armed.
And once there I'm supposed to unload it and point it safely downrange at all times. Any gun I'm shooting empty gets that treatment for the benefit of others around me - once it's out of the holster. Otherwise, no. If i'm shooting a rifle that day, the pistol stays put. And likely nobody knows.
It's a study in contrasts, and when you think about it becomes amusing.