economic impact and contribution of airports and air routes to national and regional economies. (3) An evaluation of the connectivity and accessibility of airports and air routes, including their importance in supporting domestic and international travel, trade, and tourism. (4) An analysis of infrastructure and technological requirements necessary to maintain and enhance the strategic importance of identified airports and air routes. (5) An identification of potential vulnerabilities, risks, and challenges faced by airports and air routes of strategic importance, including cybersecurity threats and physical infrastructure vulnerabilities. (6) Any recommendations for improving the security, resilience, and efficiency of the identified airports and air routes, including potential infrastructure investments and policy changes. 754. GAO study on implementation of grants at certain airports The Comptroller General shall conduct a study on the implementation of grants provided to airports located in the Republic of the Marshall Islands, Federated States of Micronesia, and Republic of Palau under section 47115(i) of title 49, United States Code and submit to the appropriate committees of Congress a report on the results of such study. 755. GAO study on transit access (a) In general Not later than 18 months after the date of enactment of this Act, the Comptroller General shall conduct a study on transit access to airports and submit to the appropriate committees of Congress a report on the results of such study. (b) Contents In carrying out the study under subsection (a), the Comptroller General shall review public transportation access to commercial service airports throughout the United States, including accessibility and other potential barriers for individuals. 756. Banning municipal airport (a) In general The United States, acting through the Administrator, shall release the City of Banning, California, from all restrictions, conditions, and limitations on the use, encumbrance, conveyance, and closure of the