Succession
https://www.whitehouse.gov/presidential-actions/executive-order-providing-order-succession-within-department-defense/
EXECUTIVE ORDERS
Executive Order on Providing an Order of Succession Within the Department of Defense
Issued on: December 10, 2020
Section 1. Order of Succession. (a) Subject to the provisions of section 2 of this order, the following officials of the Department of Defense, in the order listed, shall act as and perform the functions and duties of the office of the Secretary of Defense (Secretary) during any period in which the Secretary has died, resigned, or otherwise become unable to perform the functions and duties of the office of the Secretary, until such time as the Secretary is able to perform the functions and duties of that office:
(i) Deputy Secretary of Defense;
(ii) Secretaries of the Military Departments;
(iii) Under Secretary of Defense for Policy;
(iv) Under Secretary of Defense for Intelligence and Security;
(v) Chief Management Officer of the Department of Defense;
(vi) Under Secretary of Defense for Acquisition and Sustainment;
(vii) Under Secretary of Defense for Research and Engineering;
(viii) Under Secretary of Defense (Comptroller);
(ix) Under Secretary of Defense for Personnel and Readiness;
(x) Deputy Under Secretary of Defense for Policy;
(xi) Deputy Under Secretary of Defense for Intelligence and Security;
(xii) Deputy Under Secretary of Defense for Acquisition and Sustainment;
(xiii) Deputy Under Secretary of Defense for Research and Engineering;
(xiv) Deputy Under Secretary of Defense (Comptroller);
(xv) Deputy Under Secretary of Defense for Personnel and Readiness;
(xvi) General Counsel of the Department of Defense, Assistant Secretaries of Defense, Director of Cost Assessment and Program Evaluation, Director of Operational Test and Evaluation, and Chief Information Officer of the Department of Defense;
(xvii) Under Secretaries of the Military Departments; and
(xviii) Assistant Secretaries of the Military Departments and General Counsels of the Military Departments.
By the authority vested in me as President by the Constitution and the laws of the United States of America, including the Federal Vacancies Reform Act of 1998, as amended, 5 U.S.C. 3345 et seq., it is hereby ordered as follows:
DONALD J. TRUMP
THE WHITE HOUSE,
December 10, 2020.