John Roosen started his career as a biologist, served as a naval officer and environmental emergency specialist in the United States, and has lived and worked in Australasia, Antarctica and the Middle East. At a moment’s notice, he would respond to chemical and refinery plant explosions, deal with rocket fuel plant meltdowns and dismantle illegal drug labs. As a changeup, John switched careers to chasing pirates and duelling with a con artist extraordinaire on a remote South Pacific island. In between, he organised jungle expeditions and deep-sea scuba diving. However, John’s experience extends beyond responding to cataclysmic disasters and includes mastering the intricacies of making soufflé omelettes without burning the edges.