FrontMatter -- Preface -- Acknowledgment of Reviewers -- Contents -- Executive Summary -- 1 Introduction -- 2 The Chemical Sector -- 3 Methodological Approach to Determining Vulnerabilities -- 4 Realistic Chemical Incident Scenarios -- 5 Managing Risk -- 6 Science and Technology Investment to Protect the Nation's Chemical Infrastructure: Findings and Recommendations -- Appendixes -- Appendix A Historical Scenarios -- Appendix B Statement of Task -- Appendix C Committee Membership -- Appendix D Meetings and Presentations -- Appendix E Acronyms -- Appendix F Glossary.