; (2) in subsection (a)(5)(A)(i), by inserting chapter 448, after chapter 447 (except sections 44717–44723), ; (3) in subsection (d)(2), by inserting chapter 448, after chapter 447 (except sections 44717 and 44719–44723), ; and (4) in subsection (f)(1)(A)(i), by inserting chapter 448, after chapter 447 (except sections 44717 and 44719–44723), . (f) Rule of construction Nothing in this section shall be construed to limit the authority of the Administrator to pursue an enforcement action for a violation of this subtitle or any other applicable provision of aviation safety law or regulation using remote detection or identification or other technology following the sunset of the pilot program. 373. Federal and local authorities (a) In general Not later than 180 days after the date of enactment of this Act, the Comptroller General of the United States shall— (1) conduct a study on the relative roles of the Federal Government, State, local and Tribal governments in the regulation and oversight of low-altitude operations of unmanned aircraft systems in the national airspace system