Thor Myklebust is a senior safety assessor, business developer and researcher at SINTEF Digital in Norway, where he is involved in mainly international and national development and research projects. He has participated in several international committees since 1988, been a member of safety IEC 65, the IEC 61508 international committee, railway CENELEC/TC 9 and NB-rail (notified bodies) since 2007. In addition, he was vice chair of NB-Rail in 2014 and chairman of NB-Rail in 2015. He is also one of the founders of SafeScrum®, a methodology for agile development of safety-critical software. Tor Stålhane is professor emeritus at the Norwegian University of Science and Technology in Trondheim. He holds a PhD in statistics and is currently doing research in software engineering and system safety analysis. He, too, is one of the founders of SafeScrum®.