He has captured the wisdom of frontline caregivers through rigorous assessments of safety culture and teamwork. His research instruments have been used around the world in over 2500 hospitals, in 20 countries. He has studied teamwork and safety practices in high risk environments such as the commercial aviation cockpit, the operating room, and the intensive care unit, under funding from NASA, AHRQ, Robert Wood Johnson Foundation, Swiss National Science Foundation, and the Gottlieb Daimler and Karl Benz Foundation.