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Historically, learning from accidents and incidents involves identifying errors of commission or omission and “things that go wrong” and how to reduce their recurrence. While well-intentioned, infrequent failures receive more attention than everyday successes. Human Factors analysis need not limit itself to learning from failures. Learning from “what goes right” involves identifying resilience factors associated with behaviors and processes that strengthen the system and reduce risk. This article provides an overview of how the National Aeronautics and Space Administration (NASA) Human Factors Task Force (HFTF) constructed the NASAHFACS model and the Red Light/Green Light approach. Using SpaceShipTwo as a case study we applied the updated taxonomy and approach to illustrate its use.