 Maggie ( Lauren Cohan ) begs Glenn ( Steven Yeun ) , already struggling with being the only one to know about Lori 's pregnancy , to keep secret the presence of walkers in the barn . Dale ( Jeffrey DeMunn ) quickly notices Glenn 's nervousness who , after being questioned , blurts out both secrets . He checks on Lori and promises her that he will not tell anyone about her pregnancy . Afterwards , Dale confronts Hershel about the walkers in the barn . Hershel asserts that all walkers are still people , and that they are just ill . He explains that among the walkers in the barn are his wife and stepson . Dale argues that they are not human beings , and explains that they are too dangerous to be kept alive based on what he has seen . Hershel however considers killing the walkers to be atrocious . Rick ( Andrew Lincoln ) and Lori argue about how to tell the group of Hershel 's ( Scott Wilson ) refusal to let them stay on the farm once they get back on their feet . Meanwhile Rick , Shane and T @-@ Dog ( IronE Singleton ) give gun training to Jimmy , Carl and the women on the farm . Shane decides to take Andrea for advanced training lessons after she impresses him with her shooting skills . Despite her previous prowess she proves unable to shoot a moving target . Shane attempts to motivate Andrea by mentioning Amy , Andrea 's late sister , but instead upsets her and she storms off . 
