; and (15) the ability of airports to finance necessary safety, security, capacity, and environmental projects identified in capital improvement plans. (d) Report Not later than 15 months after the date of enactment of this Act, the qualified organization shall submit to the Secretary and the appropriate committees of Congress a report on its findings and recommendations. (e) Funding The Secretary is authorized to use such sums as are necessary to carry out the requirements of this section. (f) Definition of qualified organization In this section, the term qualified organization means an independent nonprofit organization that recommends solutions to public policy challenges through objective research and analysis. 1404. Airport vehicle emissions Section 40117(a)(3)(G) is amended to read as follows: (G) A project to reduce emissions under subchapter I of chapter 471 or to use cleaner burning conventional fuels, or for acquiring for use at a commercial service airport vehicles or ground support equipment that include low-emission technology or to use cleaner burning fuels, or if the airport is located in an air quality nonattainment area (as defined in section 171(2) of the Clean Air Act ( 42 U.S.C. 7501(2) )) or a maintenance area referred to in section 175A of such Act ( 42 U.S.C. 7505a ), a project to retrofit any such vehicles or equipment that are powered by a diesel or gasoline engine with emission control technologies certified or verified by the Environmental Protection Agency to reduce emissions, if such project would be able to receive emission credits for the project from the governing State or Federal environmental agency as described in section 47139. . II Safety A Unmanned aircraft systems reform 2001. Definitions (a) In general Unless expressly provided otherwise, the terms used in this subtitle have the meanings given the terms in section 44801 of title 49, United States Code, as added by section 2121 of this Act. (b) Definition of civil aircraft The term civil aircraft has the meaning given the