The ASD(R&E) Organization Chart includes links to select leadership biographies and component websites.

Org Chart DMEA DARPA DTIC PD: Perkins PD: Baldwin Office of the Under Secretary of Defense for Acquisition, Technology and Logistics ASD(R&E) DASD-Research DASD-Systems Engineering DASD-Emerging Capability & Prototyping
DASD-Dev Test & Evaluation PD: Ormond PD: Hall
Principal Deputy Hinton

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Dr. Steven Walker

Acting Director, Defense Advanced Research Projects Agency

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Ms. Mary Miller

Dr. Steven H. Walker is the acting director of Defense Advanced Research Projects Agency (DARPA). Prior to this assignment, he was the deputy director at DARPA from October 2012 to January 2017.

Prior to his August 2012 return to DARPA, Dr. Walker served as Deputy Assistant Secretary of the Air Force for Science, Technology and Engineering, Office of the Assistant Secretary of the Air Force for Acquisition, Washington, D.C. He was responsible for developing the technology investment strategy for the Air Force's annual $2 billion science and technology program and for providing functional management for more than 14,000 military and civilian scientists and engineers. He provided annual testimony to Congress, technical advice and counsel to the Air Force Acquisition Executive, and made Air Force science and technology recommendations to the Office of the Secretary of Defense.

Dr. Walker has devoted nearly 30 years of experience to civil service. He began his engineering career in the Air Force Research Laboratory's Air Vehicles Directorate in Dayton, Ohio, developing airplane exhaust system thrust vectoring concepts and aero-acoustic prediction methodologies. Subsequent assignments include Program Manager of the Unsteady Aerodynamics and Hypersonics Research Program at the AFRL's Air Force Office of Scientific Research in Arlington, Va., and special assistant to the Director, Defense Research and Engineering at the Pentagon. Dr. Walker also previously served in DARPA's Tactical Technology Office as a program manager, deputy director and director. As a program manager, he initiated the $500 million DARPA/Air Force Falcon program to develop and flight test technologies for long duration hypersonic flight and affordable, responsive space lift.

Dr. Walker holds a Bachelor of Science in aerospace engineering from the University of Notre Dame, a Master of Science in mechanical engineering from the University of Dayton, and a Doctorate of Philosophy in aerospace engineering from the University of Notre Dame.

Dr. Walker is a member of the Senior Executive Service and a Fellow of the American Institute of Aeronautics and Astronautics and received the AIAA Hap Arnold Award for Excellence in Aeronautical Management in 2014. He has also been awarded the Presidential Rank Award, the Air Force Meritorious Civilian Service medal, and the DoD Exceptional, Meritorious, and Distinguished Civilian Service medals.

Dept of Defense US Air Force OASAALT RDECOM ONR NRL US Air Force Joint Chiefs of Staff Defense Advanced Research Projects Agency Force Health Protection & Readiness Defense Threat Reduction Agency Missile Defense Agency Joint Improvised Explosive Device Defeat Organization Chemical & Biological Defense Program