Hired Guns: Armed Security Guards Get Little Oversight or Training

Security guards seem to be everywhere these days, and they're often carrying guns. Private security is a big business -- but standards, regulations and licensing for this growing industry are determined on a state-by-state basis. The Center for Investigative Reporting, in collaboration with CNN, looked into what it takes to become an armed security guard. They found a startlingly low threshold. We talk to reporter Shoshana Walter about what it takes to be a security guard in California.