Front Matter -- Foreword -- Acknowledgments -- Contents -- Executive Summary -- 1 Scoping the Problem -- 2 Solar Particle Events and the International Space Station -- 3 Relativistic Electrons and the International Space Station -- 4 Spacecraft Sources of Operational Radiation Data -- 5 Interagency Connections -- 6 Intra-NASA Connections -- Epilogue A Notional Scenario for Improved Support of International Space Station Construction -- APPENDIX A Space Weather Models Applied to Radiation Risk Reduction -- APPENDIX B Statement of Task -- APPENDIX C Biographies of Committee Members -- APPENDIX D Acronyms and Abbreviations.