In 1970, a fire at a famous Tucson hotel (the Pioneer Hotel) changed the lives of not only the affected, but of the nation. After the fire, many fire code laws were created so a tragedy like this would never happen again. This 26 minute documentary was produced by the Pesqueira family, which some of their members were firefighters that night.
The video is in IMDb: https://www.imdb.com/title/tt1841640/
Below is the premiere at the Fox Theater.