This is a summary of Episode 20, where we held two discussions broadly grouped under the umbrella title of High Reliability in practice. Broadly focused on the 1993 classic research by Karl Weick and Karlene Roberts which asked how do complex, high risk organizations manage to work safely and reliably, our discussion in Episode 20 featured an appearance by a very special guest! Basically, Weick and Roberts went aboard a US Navy Nimitz class aircraft carrier to collect data and observe how the flight deck crew launches and recovers aircraft. When they came aboard the USS Carl Vinson aircraft carrier, guess who was there to welcome them? Commanding officer Rear Admiral Tom Mercer! Thanks to Ralph we managed to get in touch with Tom and he joined us for part one of the discussion, so definitely listen to that if you haven’t yet.