 Cheers and boos in the crowd at Cena's surprise appearance at Saturday's Monday in the Bank Premium Live event. Cena says he'll compete for 30 or 40 events through next year before he actually throws in the towel. Dow Futures, up 13. This is CBS News. Sponsored by Progressive Insurance. We offer auto, home, and commercial auto insurance, plus a variety of business insurance options. Visit Progressive.com today.