; (2) activities to improve the capability of the ISS to accommodate commercial users; and (3) subject to subsection (c), activities to accelerate the development of commercial space stations or commercial space habitats. (c) Conditions (1) Cost share The Administration shall give priority to each activity under subsection (b)(3) in which the private sector entity conducting the activity provides a share of the costs to develop and operate the activity. (2) Commercial space habitat The Administration may not engage in an activity under subsection (b)(3) until after the date that the Administrator awards a contract for the use of a docking port on the ISS. (d) Reports Not later than 30 days after the date that an award or agreement is made under subsection (b)(3), the Administrator shall submit to the appropriate committees of Congress a report on the development of the commercial space station or commercial space habitat, as applicable, including a business plan for how the activity will— (1) meet NASA’s future requirements for low-Earth orbit human space flight services; and (2) satisfy the non-Federal funding requirement under subsection (c)(1). 206. Stepping stone approach to exploration (a) In general Section 70504 of title 51, United States Code, is amended to read as follows: 70504. Stepping stone approach to exploration (a) In general The Administrator may conduct missions to intermediate destinations in sustainable steps in accordance with section 20302(b) of this title, and on a timetable determined by the availability of funding, in order to achieve the objective of human exploration of Mars specified in section 202(b)(5) of the National Aeronautics and Space Administration Authorization Act of 2010 ( 42 U.S.C. 18312(b)(5) ), if the Administrator— (1) determines that each such mission demonstrates or advances a technology or operational concept that will enable human missions to Mars