FrontMatter -- Preface -- Acknowledgments -- Acknowledgment of Reviewers -- Contents -- Figures, Tables, and Boxes -- Acronyms and Abbreviations -- Executive Summary -- 1 Introduction -- 2 Networks and Network Research in the 21st Century -- 3 Networks and the Military -- 4 The Definition and Promise of Network Science -- 5 The Content of Network Science -- 6 Status and Challenges of Network Science -- 7 Creating Value from Network Science: Scope of the Opportunity -- 8 Conclusions and Recommendations -- Appendixes -- A Biographical Sketches of Committee Members -- B Committee Meetings and Other Activities -- C Content of Network Science Courses -- D Questionnaire Data -- E Opportunities for Creating Value from Network Science -- F Recommended Reading List.