 In 1972, he and Doris released "Approaching the Unapproachable", a documentary film on tornadoes that was the first to consider tornadoes in a scientific context rather than as a hazard and was the first compilation of tornado footage.In 1979 Grazulis began working with the Nuclear Regulatory Commission (NRC) in creating a history of tornadoes.Specifically, he worked on refining and augmenting the databases of tornadoes maintained by the National Severe Storms Forecast Center (NSSFC) in Kansas City, Missouri as well as the database headed by Ted Fujita at the University of Chicago, with whom he collaborated when developing their respective databases.