The director of national intelligence (DNI) is a United States government Cabinet-level official, required by the Intelligence Reform and Terrorism Prevention Act of 2004 to serve as head of the United States Intelligence Community and to direct and oversee the National Intelligence Program (NIP). The DNI also serves, upon invitation, as an advisor to the president of the United States and the executive offices of the National Security Council and the Homeland Security Council about intelligence matters related to national security. The DNI produces the President's Daily Brief (PDB), a top-secret document including intelligence from all the Intelligence Community agencies, given each morning to the President.