§ 137a. Principal Deputy Under Secretaries of Defense

(a)
(1) There are five Principal Deputy Under Secretaries of Defense.
(2) The Principal Deputy Under Secretaries of Defense shall be appointed from civilian life by the President, by and with the advice and consent of the Senate.
(b) Each Principal Deputy Under Secretary of Defense shall be the first assistant to an Under Secretary of Defense and shall assist such Under Secretary in the performance of the duties of the position of such Under Secretary and shall act for, and exercise the powers of, such Under Secretary when such Under Secretary is absent or disabled.
(c)
(1) One of the Principal Deputy Under Secretaries is the Principal Deputy Under Secretary of Defense for Acquisition, Technology, and Logistics.
(2) One of the Principal Deputy Under Secretaries is the Principal Deputy Under Secretary of Defense for Policy.
(3) One of the Principal Deputy Under Secretaries is the Principal Deputy Under Secretary of Defense for Personnel and Readiness.
(4) One of the Principal Deputy Under Secretaries is the Principal Deputy Under Secretary of Defense (Comptroller).
(5) One of the Principal Deputy Under Secretaries is the Principal Deputy Under Secretary of Defense for Intelligence, who shall be appointed from among persons who have extensive expertise in intelligence matters.
(d) The Principal Deputy Under Secretaries of Defense take precedence in the Department of Defense after the Secretary of Defense, the Deputy Secretary of Defense, the Secretaries of the military departments, the Under Secretaries of Defense, and the Deputy Chief Management Officer of the Department of Defense. The Principal Deputy Under Secretaries shall take precedence among themselves in the order prescribed by the Secretary of Defense.