; (B) ensuring flexibility in guidance, rules, and grant funding to allow for technology improvements; (C) creating efficiencies related to Next Generation 9–1–1, including cybersecurity and the virtualization and sharing of core infrastructure; (D) enabling effective coordination among State, local, Tribal, and territorial government entities to ensure that the needs of emergency communications centers in both rural and urban areas are taken into account in each implementation plan required under section 159(c)(3)(A)(iii); and (E) incorporating existing cybersecurity resources to Next Generation 9–1–1 procurement and deployment. (8) Authority to provide additional recommendations Except as provided in paragraphs (1) and (7), the Board may provide recommendations to the Assistant Secretary only upon request of the Assistant Secretary. (9) Duration of authority The Board shall terminate on the date on which funds made available to make grants under section 159(c) are no longer available to be expended. (b) Rule of construction Nothing in this section may be construed as limiting the authority of the Assistant Secretary to seek comment from stakeholders and the public. 162. Authorization of appropriations (a) In general There are authorized to be appropriated to the Assistant Secretary to carry out sections 159, 160, and 161 $15,000,000,000 for fiscal years 2024 through 2028, and such amounts are authorized to remain available until expended. (b) Administrative costs Not more than 4 percent of any amounts appropriated under subsection (a) may be used for administrative purposes (including carrying out sections 160 and 161). .