Group - National Security and Homeland Security Presidential Directive

The National Security and Homeland Security Presidential Directive (National Security Presidential Directive NSPD 51/Homeland Security Presidential Directive HSPD-20, sometimes called simply "Executive Directive 51" for short), created and signed by United States President George W. Bush on May 4, 2007, is a Presidential Directive which claims power to execute procedures for continuity of the federal government in the event of a "catastrophic emergency".