In a two-part segment, CBS News' John Miller receives unprecedented access to the halls of the United States National Security Agency and interviews several key staff including its head, General Keith B. Alexander. The segment includes an explanation of what the NSA does and what it says it does not do, including spying on Americans. The segments also look at the damage caused by former contractor Edward Snowden's leaks.
Bob Simon profiles Egyptian's Christians, known as Coptics. The recent turmoil in Egypt has led to one of the worst periods of persecution of the Coptics in its nearly 2,000-year history.