In roughly the past fifty years, the term continuity of government has been used with increased frequency describing how the United States of America, a constitutional republican system of government, contains internal mechanisms to protect the executive branch in the event of crisis, attack or disruption of leadership by adversaries.

The term ‘continuity of government‘ became much more common in the aftermath of 9-11-01 and the thunder shock of an al-Qaeda inspired terrorist attack in New York and Washington DC.

Within the very brief discussion period that led up to the 10-26-01 Patriot Act [pdf here], literally a structural reform of the entire domestic terrorist apparatus that created the Director of National Intelligence (DNI), the Department of Homeland Security (DHS) and the Transportation Safety Administration (TSA), a bill only debated for a few weeks, the baseline was the enhanced ‘continuity of government‘ in the event of an emergency