; and (B) take or direct the taking of such actions as will minimize the duplication of efforts and maximize efficiency and effectiveness in mission execution. (2) CMO reports Not later than January 1 of every fifth calendar year beginning with January 1, 2025, the Chief Management Officer shall submit to the congressional defense committees a report that describes the assessments carried out and the actions taken by the Chief Management Officer, and by other officers or employees of the Department at the direction of the Chief Management Office, under this subsection during the preceding five years, including the following: (A) A description of the metrics for performance relating to minimization of duplication of efforts and maximization of efficiency and effectiveness in mission execution established for applicable organizations and elements of the Department. (B) A certification of any costs avoided or cost savings achieved as a result of such assessments and actions. . (b) Report on military and civilian personnel for the NGB and National Guard Joint Staff Not later than January 1, 2020, the Secretary of Defense shall submit to the congressional defense committees a report setting forth the following: (1) The total number of members of the Armed Forces and civilian employees of the Department of Defense assigned to the Office of the Chief of the National Guard Bureau and the National Guard Joint Staff. (2) A recommendation for the total number of members and employees required for the Office of the Chief of the National Guard Bureau and the National Guard Joint Staff to execute the missions and functions of the National Guard Bureau and the National Guard Joint Staff. (c) Repeal of superseded limitations The following provisions are repealed: (1) Section 601 of the Goldwater-Nichols Department of Defense Reorganization Act of 1986 ( 10 U.S.C. 194 note). (2) Section 1111 of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009 ( 10 U.S.C. 143 note). (d) Modification of limitations on