Transportation security in the 21st century challenges the capabilities of our global transportation infrastructure. This course explores the ever-evolving requirements imposed on industry practitioners and encourages students to develop skill sets and knowledge required to embed security in transportation systems. We examine the evolution of the industry's concerns about safety, including concerns about security, and analyze how these concerns drive workforce training and resource allocation. Students assess technological and economic challenges to ensure safe and secure transportation systems. In addition to physical security issues, this course also examines the issues of resilience and preparedness, and how they drive industry practitioners, policy planners, and stakeholders.