From a technical point of view, they have a deep technical understanding of the operation of nuclear reactors, and they quickly learned that many other subjects related to nuclear technology: Henri Wallard managed the Superphénix dossier from a safety perspective, which went far beyond just technical questions, while David Lévy went to the IAEA in Vienna to hear the Soviet authorities explain what happened at Chernobyl.
David Lévy and Henri Wallard continued their careers in the nuclear industry. Henri Wallard was the first Director General of ANDRA (National Agency for Radioactive Waste) when ANDRA became independent, and David Lévy, after being one of the state representatives on the Board of Directors of the CEA and Cogema, was responsible for strategy, then for mines and upstream research at Cogema (now Orano).
David Lévy then continued his career in new technologies, software and hardware, in large French groups, and as an entrepreneur afterwards. Henri Wallard, on the other hand, was the General Director of the French subsidiaries and several foreign subsidiaries of Ipsos.
This allows them to have an excellent understanding of nuclear technology and also to provide the necessary expertise around the nuclear reactor: fuel cycle and waste, communication, relations with the political world and the population, security and non-proliferation, new technologies, investors and growing societies.