Multi-Year Development Planning. (FEMA. IEMS: MYDP, 1984, p. 1-1) 9-1-1 Centers and EOCs: The assumption that the duties identified as fundamental to an Emergency Operations Center dismisses the fact that the 9-1-1 Center, in many locations, performs these duties well in advance of any EOC activation. The information to and from the public, local/county field units, outside agency responders, related state and federal agencies as well as medical and health resources begins at the PSAP/Public Safety Communication Center. (Association of Public Safety Communications Officials. APCO Homeland Security Commitment. National Homeland Security Consortium Meeting, May 24-25, 2005, slide 5) N+1: A fault tolerant strategy that includes multiple systems or components protected by one backup system or component. (Many-to-one relationship). (DigitalCare, State of OR Business Continuity Workshop, 2006, 60)