Federal Preparedness Circular 65 (2004)
“ ESSENTIAL FUNCTIONS. The identification and prioritization of essential functions is a prerequisite for COOP because it establishes the planning parameters that drive the agency's efforts in all other planning and preparedness areas. Essential functions are those functions that enable agencies to provide vital services, exercise civil authority, maintain the safety and well being of the general populace, and sustain the industrial/economic base in an emergency. ”
