; and (B) the Independent Program Analysis and Evaluation Office established in section 1004 shall assess the basis of the five-year budget profiles and shall transmit the results of the assessment to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate not later than six months after the budget profiles have been transmitted to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate. (b) Biannual Briefings The Administrator shall provide biannual briefings on the status, progress, and any challenges identified in maturing and developing the key capabilities specified in section 203(c)(3) and section 203(f)(3) to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate. (c) Transmittal The Administrator shall transmit the architecture and plans enumerated in section 204(a)(2) through section 204(a)(3) to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate within 15 days after their scheduled completion dates. 205. Critical enabling capabilities (a) Lunar Landing Mission Architecture In order to reduce risk and complexity and make maximum use of taxpayer investments to date, the Administrator shall in the conduct of the Lunar Precursor Initiative employ an architecture that utilizes the Orion vehicle and an integrated lunar landing system carried on an Exploration Upper Stage-enhanced Space Launch System for the human lunar landing missions. The Gateway to Mars shall not be required for the conduct of human lunar landing missions. (b) Human-Rated Lunar Landing System For the purposes established in section 202(c), the Administrator shall develop and operate an integrated human lunar landing system to provide human access to the