"Every day, individuals, organizations, communities, and governments provide critical services and perform essential functions upon which neighbors and citizens depend. Continuity ensures that the whole community plans for sustaining these services and functions when normal operations are disrupted. Implementation of continuity principles ensures that organizations, communities, and governments are able to support citizens in need. Development and maintenance of continuity capabilities helps build and sustain a more resilient Nation equipped to sustain essential functions, deliver critical services, and supply core capabilities under all conditions."
Department of Homeland Security: http://www.dhs.gov/