| Robert Gates | Preceded by Sandra Day O’Connor | 22nd United States Secretary of Defense | In office December 18, 2006 – June 30, 2011 | President George W. Bush Barack Obama |
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| The Obama Cabinet | Office Name | Secretary of Defense Robert Gates* | Leon Panetta | Chuck Hagel 2013–2015 |
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| Jay Carney | President Barack Obama | Deputy Josh Earnest | Preceded by Robert Gibbs | Succeeded by Josh Earnest |
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President Truman followed up the Forrestal proposals with a message to Congress on 5 March 1949 recommending specific changes in the National Security Act, most importantly converting the NME into an executive department–the Department of Defense–and providing the secretary of defense “with appropriate responsibility ...
There are currently five under secretaries of defense, one each for acquisition, technology and logistics; policy; personnel and readiness; comptroller; and intelligence.
| Party Candidate % | Democratic Barack Obama / Joe Biden 52.93% | Republican John McCain / Sarah Palin 45.65% | Independent Ralph Nader / Matt Gonzalez 0.56% | Libertarian Bob Barr / Wayne Allyn Root 0.40% |
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| Denis McDonough | Preceded by Robert Wilkie | 26th White House Chief of Staff | In office January 20, 2013 – January 20, 2017 | President Barack Obama |
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Max Marlin Fitzwater (born November 24, 1942) is an American writer-journalist who served as White House Press Secretary for six years under U.S. Presidents Ronald Reagan and George H. W. Bush, making him one of the longest-serving press secretaries in history.
| No. | 1 | Name | Henry Knox | State of residence | Massachusetts | Took office | September 12, 1789 | Left office | December 31, 1794 |
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| Chief of Staff of the Army | Incumbent General James C. McConville since 9 August 2019 | Department of the Army Army Staff | Type United States Army service chief | Abbreviation CSA |
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Frank Kendall is the 26th Secretary of the Air Force. In this role, Mr. Kendall leads the Department of the Air Force, comprised of the U.S. Air Force and U.S. Space Force.
The Secretary of the Army is the senior civilian official within the Department of Defense responsible for all matters relating to the U.S. Army.
The secretary of the Treasury acts as a principal advisor to the President and the Cabinet on economic issues . The United States Department of the Treasury, which the secretary oversees, performs many important functions, including paying the nation’s bills, printing money, and collecting taxes.
In the United States executive branch, an undersecretary is a senior official in a government department, junior to a departmental Secretary such as the Secretary of State and usually junior to a Deputy Secretary as well. An Undersecretary is typically a political appointee.
