; and (ii) a description of how decisions are made and documented to approve such implementation. (B) A description of how recommendations made by reviews described in paragraph (3) should be evaluated. (C) A description of how timelines should be established to ensure recommendations are evaluated and implemented in a timely manner and metrics to assess the progress made with respect to such implementation. (3) Reviews described The reviews described in this paragraph are reviews of the organizational structure of the Veterans Health Administration conducted by the Secretary, the Inspector General of the Department of Veterans Affairs, the Comptroller General of the United States, the Commission on Care established by section 202 of the Veterans Access, Choice, and Accountability Act of 2014 ( Public Law 113–146 ; 128 Stat. 1773), or by an independent entity, as determined appropriate by the Secretary. (4) First use The Under Secretary shall use the process under paragraph (1) to evaluate the results of the evaluation conducted under subsection (b)(1). The Under Secretary shall make any required improvements to such process based on the lessons learned by the Under Secretary resulting from such use. (b) Veterans Integrated Service Networks (1) Evaluation Consistent with the report of the Comptroller General of the United States titled VA Health Care: Processes to Evaluate, Implement, and Monitor Organizational Structure Changes Needed (GAO–16–803), the Secretary, acting through the Under Secretary for Health, shall conduct an evaluation of all the Veterans Integrated Service Networks, including with respect to— (A) the implementation by the Secretary of realignments to such Networks