5.0ECTOR COUNTY COLISEUM(1 review) - We love the special events at the coliseum Convention Centers We love the special events at the coliseum. The coliseum is surrounded by different buildings. Those buildings are where the smaller special shows are usually held such as the gun and knife show. Most of the dealers at these type of shows prefer only cash because there is something in the roof that keeps the wifi from working for many dealers. But they do have a cash ATM machine inside the building. But there are usually long lines at those ATMs. You will need to plan on going elsewhere for lunch or dinner, but they will stamp the back of your hand so you can get back into the shows. And yes, they do background checks if you are purchasing guns. And the law enforcement do mingle with the crowds. Guns are required to be unloaded and well tied down. We haven't been to a bigger event yet in the Coliseum itself, but a few are scheduled I believe.See more..