Thx all. Yes and I know exactly when it happened...right at the very end of a five hour troop which was actually going very well...lots of fun. You know how it goes: group after group of photos, little kid after little kid, one after the other after the other...and then a quick break. So I slide the gun into the holster to give my arm a rest, and just then four drunk guys throw their arms around me from behind and spin me toward a camera...lots of yelling...flash...and they're gone. And that's when it happened. It was literally just before I walked back to the changing room, and as I'm walking to the elevator the security guard jokingly says, hey, where's your gun? And I say, it's right her-- and tap on my now empty holster. I was f-ing pissed.
Thx very much for the tips and info.