I'm very surprised that people keep suggesting that Herschel, Glenn, Carol, etc, need to step up and take power from Rick.....hello, let's not forget that in the current version (meaning of the core group at the prison) Rick is the biggest badass. Certainly Daryl could challenge him, but I don't see that happening, even when he does return. Glenn is certainly becoming more hardcore, but he's nowhere near ready to tangle with Rick. The one guy who could have, and did challenge him has already been put down (Shane). Herschel? Please, I'm not betting on the one legged man in an ass-kicking contest. I can see Carl putting his father down one day, but not soon. Michonne couldn't take out the Gov. in close quarters why would she fare any better against Rick? It's also way too early to speculate on just how the new arrivals to the prison are going to affect the power structure. Last but not least, the premise has always been on Rick's experiences through a never-ending zombie movie.