Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate not later than 180 days after the date of enactment of this Act. 336. Near-Earth object and planetary defense roadmap (a) In general The Administrator, in collaboration with other relevant Federal agencies, shall lead the development of a Roadmap to improve the detection, tracking, and characterization of near-Earth objects for the purpose of reducing uncertainties and advancing the accuracy of decision making on potentially hazardous near-Earth objects. The Roadmap shall identify existing or planned telescope programs that could contribute to improving the detection and tracking of near-Earth objects and completing the goals of the George E. Brown, Jr. Near-Earth Object Survey. (b) NASA responsibilities In carrying out subsection (a), NASA shall, in cooperation with relevant Federal agencies and international partners— (1) lead activities that— (A) enhance national capabilities for near-Earth object detection, tracking, and characterization