Developing resilience skills has the potential to shield firefighters and other emergency responders from the negative effects of stressful incidents and situations. Drawing on cutting-edge research, this SpringerBrief proposes strategies to prevent firefighter behavioral health issues using the proactive approach of resilience training. Further, resilience training aims to develop mental toughness and support overall well-being in all facets of the responder’s life.  This book emphasizes lessons and research from Positive Psychology. A new branch in the science of how the mind operates, Positive Psychology focuses on developing emotional wellness and preventing behavioral health problems. It does so in part by teaching habits and skills that promote self-efficacy, social support, and realistic optimistic thinking. The program outlined in this book supplements current approaches addressing emotional and behavioral health problems that afflict the emergency response community. Such problems include PTSD, anxiety, burnout, alcoholism, depression, and suicide.  The authors present interventions and measures for resilience training backed by research and demonstrated results within education, the military, and other communities. Drawing on her more than 25 years’ experience in working with fire service representatives at all levels, Ms. Deppa understands the importance of considering the fire service culture. Dr. Saltzberg, a practicing psychologist, has taught resilience skills to a wide range of populations, including students, teachers, counselors, and U.S. Army officers. Together, they present a compelling approach to preventing behavioral health problems before they occur.