; and (ii) in clause (ii), by striking and (g) and inserting (g), and (i) ; and (B) in subparagraph (B), by inserting or (i)(2) after (g)(3) ; and (2) in subsection (h)(1), by inserting or (i) after subsection (g) . (c) Preservation of existing within-Perimeter air service In recognition of the importance of preserving air service, as it exists on the date of enactment of this section, between Ronald Reagan Washington National Airport and within-perimeter airports and communities, this section and the amendments made by this section shall not be construed as authorizing any limited incumbent or non-limited incumbent air carrier holding slots or slot exemptions at Ronald Reagan Washington National Airport as of the date of enactment of this subsection to use an existing within-perimeter slot to serve an airport beyond the perimeter described in section 49109 of title 49, United States Code.