How to Carve Out a Career as a Journalist

CNN's John Sutter talks with NSA reporter Peter Bergen about his new book, "The Puzzle Palace" He says he was inspired by a chapter in Body of Secrets that mentioned the USS Liberty being bombed and trying to cover up a massacre. The piece made him wonder how is it that this story doesn't get told elsewhere? And which is like a lot of the stuff you write about,. So before we get there, could you give us some background about your own career and how you got to where you are?