The Office of National Security Coordination (ONSC) represents the Federal Emergency Management Agency (FEMA), Department of Homeland Security (DHS), as the Federal Executive Branch Lead Agent, to coordinate and ensure continuity of national essential functions, and minimize the disruption of essential operations to guarantee the survival of an Enduring Constitutional Government. ONSC is responsible for policy, test, training and exercise of Executive Branch activities involving Continuity of Operations, Continuity of Government, and Contingency Programs to ensure appropriate preparation and execution of operations, in response to a full threat spectrum of emergencies. ONSC is also responsible for management of the Mount Weather Emergency Operations Center in support of a wide variety of FEMA and DHS functions, as well as other federal departments and activities. (FEMA, ONSC, September 15, 2006)