One witness says he thought he saw an employee go for their trunk during the rampage, possibly to retrieve their own weapon but that "9 out of 10 times" that doesn't work out in real life.
I don't know how people miss the fact that the "good guy with the gun" starts out at a huge disadvantage in these scenarios. The shooter has the weapon at hand and knows what's going on.
In all the mass shootings that have occurred in the US, I can only remember one where the "good guy with the gun" actually managed to improve the situation. At one of the church shootings in Texas, a "good guy with a gun" returned fire and drove the shooter away. So, the result was only a couple of dozen dead, instead of more.
I may have some details wrong. All of these incidents of mass murders of strangers all blend together. I think there was only one mass shooting at a church in Texas. The other big random mass shooting at a church was in Tennessee. And of course there was the massacre perpetrated in a church by Dylan Roof, but that wasn't just some random spree shooting attacking strangers. That one had a specific motivation so that's in a different category. There was the Pittsburgh area synagogue, but synagogues aren't churches, so I couldn't be confusing that one.
So, I think I must be thinking of the only mass shooting at a church in Texas, and the actions of the good guy with the gun kept the death toll at 25 or so.
It just seems like if we are depending on good guys with guns, it doesn't seem to be working out so well.
Reports from this mass shooting, which will blend into all the others within a few weeks, except for people like Venom who have a personal connection, is that the good guy tried to retrieve his gun, but he was shot. That's unconfirmed so far.
ETA: And, my mistake. There was another Texas church mass shooting, but that one only killed two people, plus the gunman. The gunman was taken out by a good guy with a gun, but the good guy was specifically a member of the church security team so, although a volunteer, he was specifically doing security duty and armed specifically for that purpose. Definitely a good guy with a gun, but not a random happened to be in the neighborhood with his gun.