William C. Greenwalt is a visiting fellow at the Marilyn Ware Center for Security Studies at the American Enterprise Institute (AEI), where he is working on defense and aerospace acquisition issues and industrial base policy.

Greenwalt has broad-ranging experience in the field and has served in senior positions at the Pentagon, in Congress, and in the defense industry. As deputy under secretary of defense for industrial policy, he advised the under secretary of defense for acquisition, technology, and logistics on all matters relating to the defense industrial base. In Congress, Greenwalt served as deputy director for the Surveys and Investigations staff of the House Appropriations Committee, as well as a professional staff member for the Senate Armed Services and Senate Governmental Affairs Committees. As a Senate staff member, Greenwalt’s work on reforms of management and acquisition practices led to the Clinger-Cohen Act of 1996. Greenwalt has also worked for Lockheed Martin as director of federal acquisition policy. Immediately before joining AEI, Greenwalt was vice president of acquisition policy at the Aerospace Industries Association where he developed and coordinated the aerospace industry position on a variety of related issues.

Greenwalt has a B.A. in economics and political science from California State University, Long Beach and an M.A. in international relations from the University of Southern California, Los Angeles. He is pursuing a Ph.D. in public policy at the University of Maryland, College Park.


  • Vice President, Acquisition Policy, Aerospace Industries Association, 2012–13
  • Deputy Director, Surveys and Investigations, House Appropriations Committee, 2011–12
  • Director, Federal Acquisition Policy, Lockheed Martin Corporation, 2009–11
  • Deputy Under Secretary of Defense for Industrial Policy, Office of the Secretary of Defense, US Department of Defense, 2006–09
  • Professional Staff Member, Senate Armed Services Committee, 1999–2006
  • Professional Staff Member, Senate Governmental Affairs Committee, 1997–99
  • Professional Staff Member, Subcommittee on Oversight of Government Management, Senate Governmental Affairs Committee, 1994–97


B.A., economics and political science, California State University, Long Beach
M.A., international relations, University of Southern California, Los Angeles
Ph.D. program in public policy (in progress), University of Maryland, College Park