Most of the Youngstown bombing deaths stopped after the Cavallaro boys innocently got hurt, as the FBI sent quite a few agents to speak with the local rackets guys....To the best of my knowledge, Cleveland had 36 car bombs in 1976 and in 1977, John Nardi, Teamster Boss of local 416 and Danny Greene were both killed by car bombs. In Youngstown, the most famous car bombings were that of Charlie Cavallaro, Billy Naples and Vince DeNiro. However, by the end of the 1950's, there were over 68 car bombing deaths in Youngstown.