Frank Carlucci Frank Carlucci Frank Charles Carlucci III (October 18, 1930 – June 3, 2018) was an American politician and diplomat who served as the United States Secretary of Defense from 1987 to 1989 in the administration of President Ronald Reagan. Carlucci served in a variety of senior-level governmental positions, including Director of the Office of Economic Opportunity in the Richard Nixon administration, Deputy Director of the CIA in the Jimmy Carter administration, and Deputy Secretary of Defense and National Security Advisor in the Reagan administration. Carlucci was born in Scranton, Pennsylvania, the son of Roxanne (née Bacon) and Frank Charles Carlucci,
United States Secretary of Defense 2,595 days. Combining his two non-sequential services as Secretary of Defense, the second longest serving is Donald Rumsfeld, who served just ten days fewer than McNamara. The shortest-serving Secretary of Defense is Elliot Richardson, who was quickly moved to US Attorney General after 114 days due to resignations during the Watergate Scandal (not counting Deputy Secretary of Defense William P. Clements and William Howard Taft IV, who each served a few weeks as temporary/acting Secretary of Defense). The Secretary of Defense is sixth in the presidential line of succession, following the Secretary of the Treasury and preceding the Attorney General.