; (K) an identification of the necessary actions and an estimate of the costs to deorbit the ISS once it has reached the end of its service life; (L) the impact on deep space exploration capabilities, including a crewed mission to Mars in the 2030s, if the preferred service life of the ISS is extended beyond 2024 and NASA maintains a flat budget profile; and (M) an evaluation of the functions, roles, and responsibilities for management and operation of the ISS and a determination of— (i) those functions, roles, and responsibilities the Federal Government should retain during the lifecycle of the ISS; (ii) those functions, roles, and responsibilities that could be transferred to the commercial space sector; (iii) the metrics that would indicate the commercial space sector's readiness and ability to assume the functions, roles, and responsibilities described in clause (ii); and (iv) any necessary changes to any agreements or other documents and the law to enable the activities described in subparagraphs (A) and (B). (3) Demonstrations If additional Government crew, power, and transportation resources are available after meeting the Administration's requirements for ISS activities defined in the human exploration roadmap and related research, demonstrations identified under paragraph (2) may— (A) test the capabilities needed to meet future mission requirements, space exploration objectives, and other research objectives described in paragraph (2)(A)