; and (iii) by adding at the end the following new subparagraph: (E) describing the amount from the Fund that may be used to pay salaries of personnel at military departments and Defense Agencies to manage the Fund and the circumstances under which such amounts may be used for such purpose. . (2) Guidance Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense shall issue, and submit to the congressional defense committees, the policy guidance required by subparagraph (E) of section 1705(e)(3) of title 10, United States Code, as added by paragraph (1). (b) Comptroller general review of effectiveness of hiring and retention flexibilities for acquisition workforce personnel (1) In general Not later than January 15, 2019, the Comptroller General of the United States shall submit to the congressional defense committees a report on the effectiveness of hiring and retention flexibilities for the acquisition workforce. (2) Elements The report under this subsection shall include the following: (A) A determination of the extent to which the Department of Defense experiences challenges with recruitment and retention of the acquisition workforce, such as post-employment restrictions. (B) A description of the hiring and retention flexibilities available to the Department to fill civilian acquisition positions and the extent to which the Department has used the flexibilities available to it to target critical or understaffed career fields. (C) A determination of the extent to which the Department has the necessary data on its use of hiring and retention flexibilities for the civilian acquisition workforce to strategically manage the use of such flexibilities. (D) An identification of the factors that affect the use of hiring and retention flexibilities for the civilian acquisition workforce. (E) Recommendations for any necessary changes to the hiring and retention flexibilities available to the Department to fill civilian acquisition positions. (F) A description of the flexibilities