This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.ROSEMONT, Ill. — Generations of fans are colliding at the Donald E. Stephens Convention Center as the Bears kick off their centennial celebration. A sea of blue and orange flooded River Road for the festivities, which brought legends like Mike Ditka, Richard Dent, Gale Sayers, Dick Butkus, Devin Hester and many more together, under one roof, for the first time. “I couldn’t believe the amount of people trying to get in here,” remarked Butkus. “It’s six deep and it goes all around this building.