Sebastian Junger's new book, "Tribe": Homecoming is Problematic

Best-selling author Sebastian Junger talks about his new book, Tribe: On Homecoming and Belonging, with Dan Raviv, anchor of the CBS News Weekend Roundup.   With examples throughout history, Junger finds that we could learn a lot from tribal societies -- and then the return home of America's warriors from Iraq and Afghanistan might be easier.  It could be more human and humane.