; (2) in paragraph (2), by striking to reduce the future demand and the requirements for the use of energy and inserting to enhance energy resilience to ensure the Department of Defense has the ability to prepare for and recover from energy disruptions that impact mission assurance on military installations ; and (3) by adding at the end the following new paragraph: (13) Opportunities to leverage third-party financing to address installation energy needs. . 343. Centers for Disease Control study on health implications of per- and polyfluoroalkyl substances contamination in drinking water (a) In general The Secretary of Health and Human Services, acting through the Centers for Disease Control and Prevention and the Agency for Toxic Substances and Disease Registry and in consultation with the Department of Defense, shall— (1) commence a study on the human health implications of per- and polyfluoroalkyl substances (PFAS) contamination in drinking water, ground water, and any other sources of water and relevant exposure vectors, including the cumulative human health implications of multiple types of PFAS contamination at levels above and below health advisory levels; (2) not later than 5 years after the date of enactment of this Act (or 7 years after such date of enactment after providing notice to the appropriate congressional committees of the need for the delay)— (A) complete such study and make any appropriate recommendations; and (B) submit a report to the appropriate congressional committees on the results of such study