More than 120,000 people will gather at the San Diego Convention Center this weekend for Comic-Con International. Over the last 40 years, Comic-Con has grown into one of our city's biggest annual events. According to the latest estimates, Comic-Con annually brings more than $40 million to the local economy. What's the greatest benefit Comic-Con brings to our city? And, should the Convention Center be expanded to insure that Comic-Con stays in San Diego for years to come?