I am an interdisciplinary scientist with forty years of experience conducting research on complex systems, including applications to coupled social, natural, and engineered systems. Extreme events in complex systems require data-driven, mathematical, and computational models to assess and estimate risks. Strategic analysis involving extreme events in complex systems requires formal assessment tools, data, and a proper mix of modeling tools capable of generating results in terms of valuable insights. Such results provide a basis for mitigation, preparedness, recovery, and reconstruction. Resilience analysis is a major application of theory and research on extreme events in complex systems.