The first major federal firearms law passed in the 20th century was the National Firearms Act (NFA) of 1934. It was passed after Prohibition-era gangsterism peaked with the Saint Valentine's Day massacre of 1929. The era was famous for criminal use of firearms such as the Thompson submachine gun (Tommy gun) and sawed-off shotgun. Under the NFA, machine guns, short-barreled rifles and shotguns, and other weapons fall under the regulation and jurisdiction of the Bureau of Alcohol, Tobacco and Firearms (ATF) as described by Title II.