Explore a comprehensive discussion on cyber warfare, terrorism, and crime with the head of the National Security Agency and Cyber Command. Delve into the challenges of defending against potential large-scale cyber attacks, examining recent state-sponsored incidents like the Sony hack and OPM breach. Gain insights on the Cyber Mission Force, government-private sector partnerships, and the evolving threat landscape. Learn about early warning systems, rules of engagement, and the complexities of cyber response strategies. Understand the importance of data protection, the role of Silicon Valley, and the challenges in recruiting and training cybersecurity professionals.