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Under Secretary of Defense for Acquisition and Sustainment

Position in the US Department of Defense


Summary

Position in the US Department of Defense

FieldValue
postUnder Secretary of Defense for Acquisition and Sustainment
flagFlag of the U.S. Under Secretary of Defense.svg
flagsize150
flagcaptionFlag of an under secretary of defense
insigniaUnderSec Acquisition Sustainment Logo.png
insigniasize120
insigniacaptionSeal of the under secretary of defense for acquisition and sustainment
departmentOffice of the Secretary of Defense
reports_toSecretary of Defense
Deputy Secretary of Defense
imageMichael P. Duffey (2) (cropped).jpg
incumbentMichael P. Duffey
incumbentsince5 June 2025
styleMr. Under Secretary
appointerThe president
appointer_qualifiedwith Senate advice and consent
termlengthNo fixed term
formation2018
succession5th in SecDef succession
deputyDeputy Under Secretary of Defense for Acquisition and Sustainment
salaryExecutive Schedule, Level III
website

Deputy Secretary of Defense

The under secretary of defense for acquisition and sustainment, or USD (A&S), is the principal staff assistant (PSA) and advisor to the United States secretary of defense for all matters relating to acquisition and sustainment in the Department of Defense. This includes the DoD Acquisition System; system design and development; production; logistics and distribution; installation maintenance, management, and resilience; military construction; procurement of goods and services; material readiness; maintenance; environment and energy resilience (including renewable energy); utilities; business management modernization; International Armaments Cooperation, Cooperative Acquisition and International Agreements, Promoting exportability of military components to allies and partners; nuclear, chemical and biological defense programs; and nuclear command, control, and communications.

Ellen Lord became the first under secretary of defense for acquisition and sustainment on 1 February 2018, after serving as the final under secretary of defense for acquisition, technology, and logistics.

The under secretary is appointed from civilian life by the president with the consent of the Senate to serve at the pleasure of the president.

Overview

The mission of the OUSD(A&S) is Enable the Delivery and Sustainment of Secure and Resilient Capabilities to the Warfighter and International Partners Quickly and Cost Effectively.

The Office of the Under Secretary of Defense for Acquisition and Sustainment (OUSD(A&S)) is focused on forming an acquisition system that moves at the speed of relevance, and to do that, has been shaped into an organization that provides a defense-wide adaptive acquisition framework from need identification to disposal. Using data-driven analysis linked with the National Defense Strategy, OUSD(A&S) scales to enable new product and process development and supports a culture of innovation, critical thinking, and creative compliance. There are multiple organizations that fall under OUSD(A&S) that also work towards this goal.

The Office of the Assistant Secretary of Defense for Acquisition (OASD(A)) delivers capability at the point of need through a Defense Acquisition System that is flexible, tailorable, and enables speed. ASD(A) is focused on moving defense acquisition away from being expensive, slow, and burdensome by reducing timelines, lowering costs, and improving quality while rapidly introducing new technology to enhance capability.

The Office of the Assistant Secretary of Defense for Sustainment (OASD(Sustainment)) works with logistics and materiel readiness in the Department of Defense (DoD) and is the principal logistics official within the senior management of the DoD. In this capacity, the ASD(S) prescribes policies and procedures for the conduct of logistics, maintenance, materiel readiness, strategic mobility, and sustainment support in the DoD, to include, supply, maintenance, and transportation.

The Office of the Assistant Secretary of Defense for Nuclear Deterrence, Chemical & Biological Defense Policy & Programs (OASD(ND-CBD)) leads DoD efforts in preparing for, deterring, and mitigating current and future weapons of mass destruction (WMD) threats. They aim to sustain and modernize the U.S. nuclear deterrent; develop capabilities to detect, protect against and respond to WMD threats; ensure DoD compliance with nuclear, chemical, and biological treaties and agreements; continue to work with allies and partners to strengthen our collective countering weapons of mass destruction (CWMD) capabilities; and advance the United States nonproliferation goals.

The Industrial Policy office supports the Under Secretary of Defense for Acquisition and Sustainment by providing detailed analyses and in-depth understanding of the increasingly global, commercial, and financially complex industrial supply chain essential to our national defense.

The Executive Director for Special Access Program Central Office facilitates and maintains MOAs and memorandums of understanding for foreign involvement with DoD SAPs and coordinates with appropriate oversight authorities.

International Cooperation (IC) Office is to strengthen key international partnerships through cooperative Acquisition & Sustainment initiatives to improve interoperability and sharpen the warfighter’s technological edge. IC prioritizes enabling a lethal, secure, and networked constellation of allies and partners.

History

The Military Retirement Reform Act of 1986 created the position of Under Secretary of Defense for Acquisition (USD(A)), which was implemented with the issuance of Department of Defense Directive 5134.1 in February 1987. As part of this act, the position of Under Secretary of Defense for Research and Engineering (USD(R&E)) was redesignated as the Director of Defense Research and Engineering (DDR&E), a lower-ranking position which reported to the new USD(A).

The title of USD(A) was changed to Under Secretary of Defense for Acquisition and Technology (USD(A&T)) by the National Defense Authorization Act for Fiscal Year 1994, and the position was later redesignated as the Under Secretary of Defense for Acquisition, Technology, and Logistics (USD(AT&L)) by the National Defense Authorization Act for Fiscal Year 2000. The USD(AT&L) served as the principal assistant to the Secretary of Defense for research and development, production, procurement, logistics, and military construction.

The National Defense Authorization Act for Fiscal Year 2017 removed the position of USD(AT&L), and in its place it created the position of USD(R&E) once again, as well as the new position of USD(A&S). These changes took effect on 1 February 2018. As part of the reorganization, the Assistant Secretary of Defense for Logistics and Materiel Readiness (ASD(L&MR)) and Assistant Secretary of Defense for Energy, Installations, and Environment (ASD(EI&E)) positions were combined into a new Assistant Secretary of Defense for Sustainment.

Organization

  • Under Secretary of Defense for Acquisition and Sustainment
    • Office of the Chief of Staff
      • Commander's Action Group
    • Deputy Under Secretary of Defense for Acquisition and Sustainment
      • Office of Business Operations
    • Office of the Assistant Secretary of Defense for Acquisition
      • Defense Acquisition University
      • Defense Contract Management Agency
      • Joint Rapid Acquisition Cell
    • Office of the Assistant Secretary of Defense for Sustainment
      • Defense Logistics Agency
    • Office of the Assistant Secretary of Defense for Energy, Installations, and Environment
      • Office of the Deputy Assistant Secretary of Defense for Infrastructure Modernization & Resilience
      • Office of the Deputy Assistant Secretary of Defense for Environmental Management & Restoration
      • Office of the Deputy Assistant Secretary of Defense for Housing (H)
      • Office of the Deputy Assistant Secretary of Defense for Energy Resilience & Optimization
      • Office of Local Defense Community Cooperation
    • Assistant Secretary of Defense for Industrial Base Policy
      • Office of the Deputy Assistant Secretary of Defense for Industrial Base Resilience
      • Office of the Deputy Assistant Secretary of Defense for International and Industry Engagement
      • Office of Small Business Programs
      • Office of Global Investment and Economic Security
    • Office of the Secretary of Defense for Nuclear Deterrence, Chemical, and Biological Defense Policy and Programs
      • Office of the Deputy Assistant Secretary of Defense for Chemical, Biological, Radiological, and Nuclear Defense
      • Office of the Deputy Assistant Secretary of Defense for Nuclear Deterrence and Counter-WMD Policy
      • Office of the Deputy Assistant Secretary of Defense for Nuclear Matters
      • Defense Threat Reduction Agency
    • Office of International Cooperation
    • Office of Special Programs
    • Office of Human Capital Initiatives

Office of the Under Secretary

The Office of the Under Secretary of Defense for Acquisition and Sustainment (OUSD(A&S)), a unit of the Office of the Secretary of Defense, supervises all Department of Defense acquisitions, including procurement of goods and services, research and development, developmental testing, and contract administration, for all elements of the Department. Led by the Under Secretary, OUSD(A&S) oversees logistics, maintenance, and sustainment support for all elements of the Department and establishes policies for the maintenance of the defense industrial base of the United States.

The work of OUSD(A&S) is conducted through its several staff directorates, including:

  • Human Capital Initiatives Directorate – responsible for executing all workforce responsibilities identified by the Secretary of Defense
  • Acquisition Resources and Analyses Directorate – integrates the diverse aspects of Defense acquisition into a balanced and coherent program that supports the National Strategy and makes the most effective use of resources provided
  • International Cooperation Directorate – supports the Under Secretary in all aspects of international cooperation, develops policy for international cooperative armaments programs, and provides the Under Secretary a single, integrated picture of international cooperative activities
  • Special Programs Directorate – manages the DoD Special Access Program (SAP) management and control structures
  • Small Business Programs Directorate – advises the Secretary of Defense on all matters related to small business and is committed to maximizing the contributions of small business in DoD acquisitions
  • Administration Directorate – serves as the central focal point for all OUSD(A&S) civilian and military personnel programs, organizational management, space, facilities, supply management, security, information management, travel, budgeting, and training
  • Defense Procurement & Acquisition Policy Directorate – responsible for all acquisition and procurement policy matters in the Department, including serving as the principal advisor to the Under Secretary on acquisition/procurement strategies for all major weapon systems programs, major automated information systems programs, and services acquisitions
  • Joint Rapid Acquisition Cell – provides a single point of contact in the Office of the Secretary of Defense for tracking the timeliness of immediate warfighter need actions for the senior leadership and facilitating coordination with other government agencies
  • Defense Science Board – provides senior Department leadership independent advice and recommendations on scientific, technical, manufacturing, acquisition process, and other matters of special interest to the Department
  • Office of the Deputy Assistant Secretary of Defense for Industrial Policy – responsible for ensuring that Department policies, procedures, and actions:
    • stimulate and support vigorous competition and innovation in the industrial base supporting defense
    • establish and sustain cost-effective industrial and technological capabilities that assure military readiness and superiority

Office holders

Under Secretary

PortraitNameTenureSecDef(s) served underPresident(s) served under
*Under Secretary of Defense for Acquisition*
[[File:Richard P Godwin.jpg75pxcenter]]Richard P. Godwin30 September 1986 – 30 September 1987Caspar W. WeinbergerRonald Reagan
[[File:Portrait of Robert B. Costello, Assistant Secretary of Defense, Acquisitions and Logistics.jpg75pxcenter]]Robert B. Costello18 December 1987 – 12 May 1989Frank C. Carlucci III
William Howard Taft IV (Acting)
Richard B. CheneyRonald Reagan
George H. W. Bush
[[File:Portrait of John A. Betti, Under Secretary of Defense for Acquisitions (2).jpg75pxcenter]]John A. Betti DonJYockey11 August 1989 – 31 December 1990Richard B. CheneyGeorge H. W. Bush
[[File:Donald J. Yockey (cropped).jpg75pxcenter]]Donald J. Yockey1 January 1991 – 20 June 1991 (Acting)
20 June 1991 – 20 January 1993Richard B. CheneyGeorge H. W. Bush
*Under Secretary of Defense for Acquisition and Technology*
[[File:John Deutch, Undersecretary of Defense, 1993 official photo.JPEG75pxcenter]]John M. Deutch2 April 1993 – 11 March 1994Leslie Aspin, Jr.
William J. PerryBill Clinton
[[File:Paul_G_Kaminski_from_National_Medal_of_Technology_winners.jpg75pxcenter]]Paul G. Kaminski3 October 1994 – 16 May 1997William J. Perry
William S. CohenBill Clinton
*Under Secretary of Defense for Acquisition, Technology, and Logistics*
[[File:Jacques S. Gansler, Under Secretary of Defense (Acquisition, Technology & Logistics), official portrait.jpg75pxcenter]]Jacques S. Gansler10 November 1997 – 5 January 2001William S. CohenBill Clinton
[[File:Edward C. Aldridge, Jr..jpeg75pxcenter]]Edward C. Aldridge, Jr.10 May 2001 – 23 May 2003Donald H. RumsfeldGeorge W. Bush
[[File:Michael Wynne, official portrait.jpg75pxcenter]]Michael W. Wynne (Acting)23 May 2003 – 6 June 2005Donald H. RumsfeldGeorge W. Bush
[[File:Ken Krieg, Under Secretary of Defense for Acquisition, Technology and Logistics, official portrait.jpg75pxcenter]]Kenneth J. Krieg6 June 2005 – 20 July 2007Donald H. Rumsfeld
Robert M. GatesGeorge W. Bush
[[File:John J. Young, Jr..jpg75pxcenter]]John J. Young, Jr.20 July 2007 – 21 November 2007 (Acting)
21 November 2007 – 27 April 2009Robert M. GatesGeorge W. Bush
Barack Obama
[[File:Ashton Carter DOD photo.jpg75pxcenter]]url=https://www.war.gov/About/Biographies/archive-url=https://web.archive.org/web/20190807142806/https://www.defense.gov/Our-Story/Biographies/url-status=livearchive-date=7 August 2019title=Biographieswebsite=U.S. Department of Defense}}27 April 2009 – 5 October 2011Robert M. Gates
Leon PanettaBarack Obama
[[File:Frank Kendall DOD photo.JPG75pxcenter]]Frank Kendall III6 October 2011 – 20 January 2017Leon Panetta
Chuck Hagel
Ash CarterBarack Obama
[[File:Official_Photo_of_James_MacStravic.png75pxcenter]]Jimmy MacStravic20 January 2017 – 10 August 2017 (Performing the Duties of)James MattisDonald Trump
[[File:Ellen Lord official photo (cropped).jpg75pxcenter]]Ellen Lord10 August 2017 – 1 February 2018James MattisDonald Trump
*Under Secretary of Defense for Acquisition and Sustainment*
[[File:Ellen_Lord_official_photo_(cropped).jpg75pxcenter]]Ellen Lord1 February 2018 – 20 January 2021Donald Trump
[[File:Stacy Cummings.jpg75pxcenter]]last2=O'Brienfirst2=Connorlast1=McLearyfirst1=Pauldate=July 16, 2021title=Top Pentagon weapons office faces vacancies as the military rushes to focus on Chinaurl=https://www.politico.com/news/2021/07/16/pentagon-weapons-vacancies-china-499838work=POLITICOaccess-date=July 16, 2021}}url=https://www.meritalk.com/articles/dod-names-kausner-head-of-acquisition/title=DoD Names Kausner Head of Acquisitionlast=Dillefirst=Gracedate=2021-08-04access-date=2021-02-08}}David L. Norquist (acting)
Lloyd AustinJoe Biden
[[File:Gregory M. Kausner (3).jpg75pxcenter]]Gregory M. Kausner2 August 2021 – 7 February 2022Lloyd AustinJoe Biden
[[File:Andrew P. Hunter.jpg75pxcenter]]Andrew P. Hunter7 February 2022 – 15 April 2022Lloyd AustinJoe Biden
[[File:William A. LaPlante, Defense Under Secretary.jpg75pxcenter]]William A. LaPlante15 April 2022 – 20 January 2025Lloyd AustinJoe Biden
[[File:Steven J. Morani (2).jpg75pxcenter]]Steven J. Morani20 January 2025 – 5 June 2025Pete HegsethDonald Trump
[[File:Michael P. Duffey (2) (cropped).jpg75pxcenter]]Michael P. Duffey5 June 2025 – PresentPete HegsethDonald Trump

Deputy Under Secretary

NameTenureUSD(s) Served UnderSecDef(s) Served UnderPresident(s) Served Under
Milton Lohr3 October 1988 – 12 May 1989Robert B. CostelloRichard B. CheneyGeorge H. W. Bush
Donald J. Yockey12 March 1990 – 20 January 1991John A. BettiRichard B. CheneyGeorge H. W. Bush
Donald C. Fraser4 December 1991 – 13 January 1993Donald J. YockeyRichard B. CheneyGeorge H. W. Bush
Noel Longuemare, Jr.18 November 1993 – 21 November 1997John M. Deutch
Paul G. Kaminski
Jacques S. GanslerLeslie Aspin, Jr.
William J. Perry
William S. CohenBill Clinton
David Oliver1 June 1998 – 14 July 2001Jacques S. Gansler
Edward C. Aldridge Jr.William S. Cohen
Donald H. RumsfeldBill Clinton
George W. Bush
Michael W. Wynne17 July 2001 – 3 November 2005Edward C. Aldridge Jr.
Kenneth J. KriegDonald H. RumsfeldGeorge W. Bush
James I. Finley1 March 2006 – 20 January 2009Kenneth J. Krieg
John J. Young Jr.George W. Bush
Frank Kendall III8 March 2010 – 5 October 2011Ashton CarterRobert M. Gates
Leon PanettaBarack Obama
Alan Estevez6 October 2011 – 20 January 2017Frank Kendall IIILeon Panetta
Chuck Hagel
Ash CarterBarack Obama
Alan Shaffer28 January 2019 – 20 January 2021Ellen LordPatrick M. Shanahan (acting)
Mark Esper
Christopher C. Miller (acting)Donald Trump
Gregory M. Kausner (acting)20 January 2021 – 2 August 2021Stacy Cummings (acting)Lloyd AustinJoe Biden
Paul D. Cramer (acting)2 August 2021 – 21 April 2023Gregory M. Kausner (acting)
Andrew P. Hunter (acting)
William A. LaPlanteLloyd AustinJoe Biden
Radha Iyengar Plumb21 April 2023 – 8 April 2024William A. LaPlanteLloyd AustinJoe Biden
Deborah Rosenblum (acting)8 April 2024 – 20 January 2025William A. LaPlanteLloyd AustinJoe Biden
Brent G. Ingraham (acting)22 January 2025 – 22 September 2025Steven J. Morani (acting)
Michael P. DuffeyPete HegsethDonald Trump
Dale R. Marks (Performing the Duties of)22 September 2025 – PresentMichael P. DuffeyPete HegsethDonald Trump

References

References

  1. Joe Gould ''Defense News'' [https://www.defensenews.com/video/2022/09/12/where-do-you-buy-a-quarter-million-artillery-rounds-defense-news-conference-2022/ (11 Sep 2022) Where do you buy a quarter-million artillery rounds?. Defense News Conference 2022] 7:13 Purchase of 250,000 rounds of 155mm howitzer shells, with immediate delivery to DoD
  2. "OUSD A&S - Assistant Secretary of Defense for Acquisition".
  3. "Welcome to OASD(Sustainment)".
  4. "OASW(ND-CBD)".
  5. "Home".
  6. "Office of the Executive Director for Special Access Program Central Office".
  7. "OUSD A&S - International Cooperation".
  8. (2004). "Department of Defense Key Officials". Historical Office, OSD.
  9. Mehta, Aaron. (2 February 2018). "The Pentagon's acquisition office is gone. Here's what the next 120 days bring.". Defense News.
  10. (1 August 2017). "Report to Congress: Restructuring the Department of Defense Acquisition, Technology and Logistics Organization and Chief Management Officer Organization".
  11. "Ken Krieg - Former Under Secretary of Defense (AT&L)".
  12. "Release".
  13. (6 June 2007). "Pentagon's acquisition chief resigns". USA Today.
  14. "Young, John J. - Former USD (AT&L)".
  15. "DoD News: DoD Names Under Secretary of Defense for Acquisition, Technology and Logistics".
  16. "Biographies".
  17. Beny, Alan. "OUSD(AT&L) > About AT&L > Leadership > Biography of Frank Kendall, USD(AT&L)".
  18. "Ellen M. Lord > U.S. DEPARTMENT OF DEFENSE > Biography".
  19. (July 16, 2021). "Top Pentagon weapons office faces vacancies as the military rushes to focus on China". [[POLITICO]].
  20. Dille, Grace. (2021-08-04). "DoD Names Kausner Head of Acquisition".
  21. "Gregory M. Kausner".
  22. (2022-02-07). "Acquisition and Sustainment Leadership Transition".
  23. (February 15, 2022). "Acquisition and Sustainment Leadership Transition".
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