Defense Donald Rumsfeld - Chuck Hagel's Temperament Questionable For Pentagon Post - Bob Corker

Leon Panetta (July 2011 - Present)

Secretary with Defense Leon E. Panetta pauses while speaking within a ceremonial swearing-in on the Department associated with Defense July 22, 2011 around Washington. (Source: Department regarding Defense)

Robert Gates (Dec. 2006 - July 2011)

Robert Gates addresses for the duration of his ceremonial swearing within because the 22nd defense secretary on Dec. 18, 2006 in the Pentagon. (Source: Department with Defense)

Donald Rumsfeld (Jan. 2001 - Dec. 2006)

U.S. Secretary associated with Defense Donald Rumsfeld secures their push convention with the Pentagon briefing room upon Jan. 26, 2001 around Arlington, Va. (Source: Department of Defense)

William Cohen (Jan. 1997 - Jan. 2001)

Secretary with Defense designate William Cohen testifies during confirmation hearings previous to the Senate Armed Services Committee on Jan. 22, 1997 within Washington. (Source: Department with Defense)

William Perry (Feb. 1994 - Jan. 1997)

U.S. Defense Secretary William Perry items for you to a news reporter throughout a press conference on April 21, 1994 within Seoul, Korea. (Source: Department of Defense)

Les Aspin (Jan. 1993 - Feb. 1994)

U.S. Secretary connected with Defense Les Aspin introduced fresh polices governing gays within the actual government while in a press on Dec. 22, 1993 along at the Pentagon. (Source: Department of Defense)

Dick Cheney (March 1989 - Jan. 1993)

U.S. Defense Secretary Dick Cheney (L) satisfies Egypt's President Hosni Mubarak, with April 3, 1989, during Washington. (Source: Department regarding Defense)

Frank Carlucci (Nov. 1987 - Jan. 1989)

U.S. Defense Secretary Frank Carlucci testifies prior to the Senate Armed Services Committee on July 13, 1988 with Washington. (Source: Department associated with Defense)

Caspar Weinberger (Jan. 1981 - Nov. 1987)

Caspar Weinberger, Secretary connected with Defense on Feb. 9, 1981. (Source: Department of Defense)

Harold Brown (Jan. 1977 - Jan. 1981)

General Alexander M. Haig, right, out of production as NATO commander, taking walks by using Defense Secretary Harold Brown throughout an awards service on July 3, 1979 from Fort Myer, Va. (Source: Department of Defense)

Donald Rumsfeld (Nov. 1975 - Jan. 1977)

A 1976 photo connected with Secretary connected with Defense Donald Rumsfeld . (Source: Department of Defense)

James Schlesinger (July 1973 - Nov. 1975)

Israeli Defense Minister Moshe Dayan, left, having Secretary of Defense James R. Schlesinger, shows about Friday, Jan. 5, 1974 from that Pentagon. (Source: Department regarding Defense)

Elliot Richardson (Jan. 1973 - May 1973)

Elliot L. Richardson echoes to be able to newsmen Oct. 23, 1973 in a press meeting used for the Department regarding Justice. (Source: Department with Defense)

Melvin Laird (Jan. 1969 - Jan. 1973)

Secretary of Defense Melvin R. Laird because he departed out of Andrews Air Force Base Md., pertaining to Paris upon Jan. 5, 1971 inside Washington. (Source: Department of Defense)

Clark Clifford (March 1968 - Jan. 1969)

This is surely an Oct. 1968 photograph of Secretary of Defense Clark Clifford since this individual announces his help for President Johnson's decision in order to halt the particular bombing of North Vietnam. (Source: Department regarding Defense)

Robert McNamara (Jan. 1961 - Feb. 1968)

PARIS, FRANCE: US Secretary associated with Defense Robert McNamara smiles seeing that your dog occurs 27 November 1965 from Paris' NATO headquarters. (Source: Department associated with Defense)

Thomas Gates (Dec. 1959 - Jan. 1961)

Secretary of Defense Thomas S. Gates Jr., center, poses together with Benjamin M. McKelway, left, manager with the Washington Evening Star plus President involving the particular AP, and also AP General Manager Frank J. Starzel with the April 25, 1960 meeting in the Associated Press with New York. (Source: Department regarding Defense)

Neil McElroy (Oct. 1957 - Dec. 1959)

Defense Secretary Neil McElroy claimed they has "fullest self-belief the fact that United States is usually prior to the Soviets." prior to the statement belonging to the Soviet's success within firing the very first globe satellite, Oct. 4, 1958. (Source: Department connected with Defense)

Charles Wilson (Jan. 1953 - Oct. 1957)

Charles E. Wilson, left, will take your promise with workplace through Chief Justice Fred Vinson on the White House inside Washington about Dec. 21, 1950 while head of the workplace of Defense Mobilization. (Source: Department connected with Defense)

Robert Lovett (Sept. 1951 - Jan. 1953)

Gen. Dwight D. Eisenhower (right) different watches President Harry S. Truman and Gen. Omar Bradley help Defense Secretary Robert Lovett (left) get involved place since the gentlemen posed on this southern garden of the White House on June 1, 1952 around Washington. (Source: Department with Defense)

George Marshall (Sept. 1950 - Sept. 1951)

Anna M. Rosenberg, New York Labor and also Public Relations consultant, that's named helper assistant of defense, chats with Secretary of Defense George Marshall inside a conference along at the Pentagon on Nov. 9, 1950 in Arlington, Va. (Source: Department connected with Defense)

Louis Johnson (March 1949 - Sept. 1950)

Defense Secretary Louis Johnson (right) shows innovative identification card to help President Harry Truman at that White House on Nov. 9, 1949 throughout Washington, listing your ex while commander throughout fundamental for an "indefinite" term. (Source: Department connected with Defense)

James Forrestal (Sept. 1947 - March 1949)

James V. Forrestal, Secretary connected with Defense beneath President Harry Truman, is established on July 26, 1947. (Source: Department with Defense)