; or (B) has served as chief financial officer, deputy chief financial officer, or an equivalent executive-level position with direct authority for financial management in a large public or private sector organization. (2) Public company defined In this subsection, the term public company has the meaning given the term issuer in section 2(7) of the Sarbanes-Oxley Act of 2002 ( 15 U.S.C. 7201(7) ). (c) Applicability This section and the amendments made by this section shall take effect on the date of the enactment of this Act, and shall apply with respect to appointments that are made on or after that date. 908. Five-year period of relief from active duty as a commissioned officer of a regular component of the Armed Forces for appointment to Under Secretary of Defense positions (a) Under Secretary of Defense for Research and Engineering Effective on February 1, 2018, and immediately after the coming into effect of the amendments made by subsection (a) of the National Defense Authorization Act for Fiscal Year 2017 (130 Stat. 2339), section 133a(a) of title 10, United States Code (as added by such subsection (a)), is amended by striking seven years and inserting five years . (b) Under Secretary of Defense for Acquisition and Sustainment Effective on February 1, 2018, and immediately after the coming into effect of the amendments made by subsection (b) of the National Defense Authorization Act for Fiscal Year 2017 (130 Stat. 2340), section 133b(a) of title 10, United States Code (as added by such subsection (b)), is amended by striking seven years and inserting five years . (c) Under Secretary of Defense for Policy Section 134(a) of title 10, United States Code, is amended by striking seven years and inserting five years . (d) Under Secretary of Defense (Comptroller) Section 135(a) of such title is amended by adding at the end the following new sentence: A person may not be appointed as Under Secretary within five years after relief from active duty as a commissioned officer of a regular component of the armed