sentences:  Buscetta was the first high-profile Sicilian Mafiosi to become an informant; he revealed that the Mafia was a single organisation led by a Commission, or "Cupola" (Dome), thereby establishing that the top tier of Mafia members were complicit in all the organisation's crimes.Buscetta helped judges Falcone and Paolo Borsellino achieve significant success in the fight against organized crime that led to 475 Mafia members indicted, and 338 convicted in the Maxi Trial.In an attempt to divert investigative resources away from Buscetta's key revelations, Riina ordered a terrorist-style atrocity, the 23 December 1984 Train 904 bombing; 17 people were killed and 267 wounded.