"Our Nation faces a wide range of threats and hazards, including acts of terrorism, cyber attacks, pandemics, and catastrophic natural disasters. Communities can address the risks these threats and hazards pose by working together using a systematic approach that builds on proven preparedness activities. The National Preparedness System builds on these activities and enables the Nation to meet the National Preparedness Goal. This document summarizes the components of the National Preparedness System, which include: identifying and assessing risk, estimating the level of capabilities needed to address those risks, building or sustaining the required levels of capability, developing and implementing plans to deliver those capabilities, validating and monitoring progress, and reviewing and updating efforts to promote continuous improvement."
Federal Emergency Management Agency: http://www.fema.gov