Front Matter -- Preface -- Contents -- Executive Summary -- 1 Background and Overview -- 2 Scenarios, Defensive Concepts, and Detection Architectures -- 3 Indoor and Outdoor Bioaerosol Backgrounds and Sampling Strategies -- 4 Bioaerosol Sampling Systems for Near-Real-Time Detection -- 5 Point and Standoff Detection Technologies -- 6 Nucleic Acid Sequence-Based Identification for Detect-to-Warn Applications -- 7 Structure-Based Identification for Detect-to-Warn Applications -- 8 Chemistry-Based Identification for Detect-to-Warn Applications -- 9 Function-Based Detection -- 10 Design Considerations for Detect-to-Warn Defensive Architectures -- 11 Summary of Conclusions and a Path Forward -- Appendixes -- A Biographical Sketches of Committee Members -- B Acronyms and Abbreviations.