How should U.S. deal with decaying nuclear infrastructure?

Aired: 11/14/2014 | 0:08:54 | Clip
Defense Secretary Chuck Hagel announced a shake-up of the management of the American nuclear weapons stockpile after concluding that the country's aging nuclear infrastructure needs more support. Margaret Warner explores the some of the lapses, and Hari Sreenivasan discusses the potential overhaul with former Defense Department official David Trachtenberg and Bruce Blair of Princeton University.