Michael Duffey — Under Secretary of Defense for Acquisition & Sustainment

**William A. LaPlante has been USD(A&S) since May 2022** is the Under Secretary of Defense for Acquisition and Sustainment (USD(A&S)), the Pentagon's top acquisition official who controls ALL defense procurement — the policies, oversight, and approval authority for every major weapons system, service contract, and technology program the Department of Defense buys. Born circa 1972, Wisconsin. Career in government and national security policy. Former OMB (Office of Management and Budget) official overseeing $1T+ in national security spending, where he gained notoriety during the first Trump term for his role in the Ukraine security assistance hold.