; . (3) Effective date This subsection takes effect on the date on which the final rule under section 105(c) is published in the Federal Register. (b) Rules of construction Nothing in this Act, or the amendments made by this Act, may be construed to affect— (1) section 1617 of the National Defense Authorization Act for Fiscal Year 2016 ( 51 U.S.C. 50918 note); or (2) the authority of the Secretary of Defense as it relates to safety and security related to launch or reentry at a Defense range. (c) Technical amendment; repeal redundant law Section 113 of the U.S. Commercial Space Launch Competitiveness Act ( Public Law 114–90 ; 129 Stat. 704; 51 U.S.C. 50918 note) and the item relating to that section in the table of contents under section 1(b) of that Act are repealed. 107. Study on joint use of spaceports (a) In general Not later than 180 days after the date of the enactment of this Act— (1) the Secretary of Transportation shall, in consultation with the Secretary of Defense, conduct a study on the current process the Government uses to provide or permit the joint use of United States military installations for licensed nongovernmental space launch and reentry activities, space-related activities, and space transportation services by United States commercial providers