; (2) in subsection (b)— (A) by inserting Warrant officers .— after (b) ; (B) by striking him and inserting the warrant officer ; and (C) by striking his and inserting the warrant officer's ; and (3) by adding at the end the following: (c) Retirement in lower grade (1) Misconduct in lower grade In the case of a commissioned officer whom the Secretary determines committed misconduct in a lower grade, the Secretary may determine the commissioned officer has not served satisfactorily in any grade equal to or higher than that lower grade. (2) Adverse findings A determination of the retired grade of a commissioned officer shall be resolved following a conditional determination under subsection (a)(2) if the investigation of or personnel action against the commissioned officer results in adverse findings. (3) Recalculation of retired pay If the retired grade of a commissioned officer is reduced pursuant to this subsection, the retired pay of the commissioned officer shall be recalculated under chapter 71 of title 10, and any modification of the retired pay of the commissioned officer shall go into effect on the effective date of the reduction in retired grade. (d) Finality of retired grade determinations (1) In general Except as provided in paragraph (2), a determination of the retired grade of a commissioned officer under this section is administratively final on the day the commissioned officer is retired, and may not be reopened. (2) Reopening determinations A determination of the retired grade of a commissioned officer may be reopened if— (A) the retirement or retired grade of the commissioned officer was procured by fraud; (B) substantial evidence comes to light after the retirement that could have led to a lower retired grade under this section and such evidence was known by competent authority at the time of retirement; (C) a mistake of law or calculation was made in the determination of the retired grade