Protection Against Unconventional Threats to the Homeland and Americans Overseas, May 22, 1998. "PDD-62, issued by President Clinton on May 22, 1998, directs the establishment of an integrated program to increase U.S. effectiveness in countering terrorist threats and to prepare to manage the consequences of attacks against U.S. citizens or infrastructures. Lead agencies responsible for supporting the program... must designate a Senior Program Coordinator who is responsible for coordinating this effort within the U.S. government. This PDD reaffirms and complements the directives contained in PDD 39.... PDD 62 also requires each agency to maintain a Continuity of Operations Plan as outlined in Executive Order 12656. This plan must ensure the operation of essential agency functions following an attack that incapacitates headquarters facilities and key leadership". (EPA, Presidential Decision Directives, 2007)