1. Short title; table of contents (a) Short title This Act may be cited as the National Aeronautics and Space Administration Transition Authorization Act of 2017 . (b) Table of contents The table of contents of this Act is as follows: Sec. 1. Short title; table of contents. Sec. 2. Definitions. TITLE I—Authorization of appropriations Sec. 101. Fiscal year 2017. TITLE II—Sustaining national space commitments Sec. 201. Sense of Congress on sustaining national space commitments. Sec. 202. Findings. TITLE III—Maximizing utilization of the ISS and low-Earth orbit Sec. 301. Operation of the ISS. Sec. 302. Transportation to ISS. Sec. 303. ISS transition plan. Sec. 304. Space communications. Sec. 305. Indemnification; NASA launch services and reentry services. TITLE IV—Advancing human deep space exploration Subtitle A—Human space flight and exploration goals and objectives Sec. 411. Human space flight and exploration long-term goals. Sec. 412. Key objectives. Sec. 413. Vision for space exploration. Sec. 414. Stepping stone approach to exploration. Sec. 415. Update of exploration plan and programs. Sec. 416. Repeals. Sec. 417. Assured access to space. Subtitle B—Assuring core capabilities for exploration Sec. 421. Space Launch System, Orion, and Exploration Ground Systems. Subtitle C—Journey to Mars Sec. 431. Findings on human space exploration. Sec. 432. Human exploration roadmap. Sec. 433. Advanced space suit capability. Sec. 434. Asteroid robotic redirect mission. Sec. 435. Mars 2033 report. Subtitle D—TREAT Astronauts Act Sec. 441. Short title. Sec. 442. Findings