FrontMatter -- Dedication -- Preface -- Acknowledgments -- Contents -- Summary -- 1 Introduction -- 2 Risk Analysis -- 3 Survey and Detection of Near-Earth Objects -- 4 Characterization -- 5 Mitigation -- 6 Research -- 7 National and International Coordination and Collaboration -- 8 Optimal Approaches -- Appendixes -- Appendix A: Independent Cost Assessment -- Appendix B: Letter of Request -- Appendix C: Committee, Panel, and Staff Biographical Information -- Appendix D: Minority Opinion-Mark Boslough, Mitigation Panel Member -- Appendix E: Glossary and Selected Acronyms.