Presidential Policy Directive 8: National Preparedness (PPD-8) describes the Nation's approach to preparing for the threats and hazards that pose the greatest risk to the security of the United States. This document describes our security and resilience posture through the core capabilities (Prevention; Protection; Mitigation; Response; and Recovery) that are necessary to deal with great risks, and we will use an integrated, layered, and all-of-Nation approach as our foundation.