The Defense Industrial Base (DIB) is an unmatched element of national power that differentiates the United States from all potential opponents. In 2009, the Secretary of Homeland Security published the updated National Infrastructure Protection Plan (NIPP). The NIPP provides the overarching approach for the nation's critical infrastructure and key resources (CIKR) protection initiatives as a single integrated national effort. The Department of Defense (DoD) as the Sector-Specific Agency (SSA) for the DIB is responsible for leading the collaborative, coordinated effort to identify, assess, and improve the risk management of critical infrastructure across the DIB with its partners.