Some here are saying “mistakes happen” and their weapon may be seen once in a while but it has never happened to me. If I did slip up in a public place and someone saw it I’d leave immediately.
Like I said, I never conceal-carried. Always put the gun on my front seat on the way to target shooting (back when I used to live in Las Vegas, by the way). But it seems like you have the right idea on the subject. If a mistake happens, leave the premises. Which is what that lying scumbag employee (if witness stories turn out to be true) was basically demanding. Too bad (for his sake) the victim didn’t comply with that demand.
If the witness-version of the story holds up, I hope all the perpetrators pay with as much freedom and cash as the justice system will permit for their respective roles in this crime.