Many organizations want to learn from failures. Postmortem debriefings and documents are a part of that learning process. However, leading a debriefing is not straightforward and done haphazardly can bring cultural and technical damage to an organization. This 3-hour session will cover the theory and fundamentals of the “New View” on complex systems failure and “human error”, as well as techniques for facilitating an adverse event debriefing. Attendees should walk away with a more evolved sense of accident/outage investigation and a model to explore in their own organizations.