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.
