myfuturecsi
Corpse
It does look like an exciting episode. I am eager for it too and not just to see Greg with a gun.
I also think that if there is no explanation for him carrying one, we will just have to assume he was required to get the permit to be Level 3 and he did it off screen.
I think it would be safe to say after what happened to Greg in Fannysmackin', he WANTS to carry a gun now.
The preview looks intense, poor Riley, she's getting knocked around a lot.