From what I heard from some of the vendors, that will likely be the last expomart gun show for a LONG time. A few vendors were telling me that the Expomart ownership is generally anti-gun, and have been waiting for an excuse to give everyone the boot.
From what I hear about the accident, (and by no means am I claiming that this is accurate) some guy traded in a gun (which was loaded) and no one checked it. A few hours later, another man came by and asked to see it, and accidentally shot another man in the leg.
Which means :
Security did not tag it.
The dealer accepted an untagged gun
The seller left it loaded
The dealer did not check it
The dealer did not check it again
The guy, hours later, did not check the chamber either.