Mark R. Landahl, serves as the Emergency Manager for the City of Rockville, Maryland. He recently retired from a law enforcement career, last serving as the Homeland Security Commander for the Frederick County (Maryland) Sheriff’s Office. In addition to work in practice, Dr Landahl teaches at several universities and regularly publishes and speaks on issues in Homeland Security and Emergency Management.  Tonya E. Thornton (Neaves), is an Assistant Professor at George Mason University's Schar School of Policy and Government, where she coordinates the Emergency Management and Homeland Security graduate certificate. Tonya’s research interests primarily focus on emergency management, traffic safety, critical infrastructure, and community resiliency.

• Foreword; Law Enforcement: A Key Role during Disasters and Crises; Jason R. JenkinsIntroduction. Exploring the Role of Law Enforcement in Emergency Management throughout 2020; Tonya E. Thornton, Patrick R. Baxter, and C. Tyler GoodwinPart 1: The Protection MissionChapter 1. Law Enforcement and the Protection of Critical Infrastructures; Robert C. Kenter and Michael GoldsmithChapter 2. Bots, Bytes, and Briefs: Cyber Investigations and Prosecutions; Eileen M. Decker, Matthew Morin, and Eric M. RosnerChapter 3. Wargames: A Catalogue of Post Broderick Cyber Threats; Eileen M. Decker, Matthew Morin, and Eric M. RosnerChapter 4. Border Security; Robert M. LawlerPart 2: The Prevention MissionChapter 5. Preventing Terrorism: Structures and Processes; Keith W. LudwickChapter 6. Law Enforcement Intelligence Process; Robert VasquezChapter 7. Preventing Acts of Mass Violence; Paul J. Liquorie and Michael R. WardPart 3: Organizational PreparednessChapter 8. Preparedness and Planning for Law Enforcement Operations; Mark R. Landahl and Stacy L. Muffet-WillettChapter 9. Preparing for Planned Events: National Security Special Events; Chris D. BertramChapter 10. Preparing Officers to Build a Culture of Preparedness: A Case Study of the Boston Marathon Bombings; Claire Connolly Knox, Daniel Linskey, and Jenna TylerPart 4: The Response MissionChapter 11. The Impact of the National Incident Management System on Law Enforcement; Brett BaileyChapter 12. Law Enforcement in Public Health Emergencies; Brett BaileyChapter 13. Policing Civil Disturbances: 21st Century Evolutions and Integrated Response; Max GeronChapter 14. The Promise and Challenge of Drones in Homeland Security; Stephen Craig Schwartz