Paolo Borsellino, a prosecutor in Marsala at the time, investigated one of the many “black holes” in the investigation into the Ustica massacre. His interest was sparked by a phone call to the “Telefono giallo” program hosted by Corrado Augias on Rai 3. On May 6, 1988, a person claiming to be an airman on duty at the radar center in Marsala on the evening of June 27, 1980, called and said they had “very heavy elements” to communicate. The military had “perfectly seen the tracks” denied by the top officials of the Air Force. However, the next day, the alleged airman said that the sergeant in charge of the service told them to mind their own business and not pursue the matter further. The truth was that they were ordered to remain silent. After eight years, an “inner emotional event” made the witness call “Telefono giallo” anonymously. However, when Augias tried to investigate further, they quickly hung up. The next day, Borsellino opened an investigation into a crucial aspect of the “wall of silence” that had been erected to obscure what happened on Ambra 13. Borsellino questioned the military on duty in Marsala on the evening of the massacre but did not find any conclusive evidence. Borsellino’s investigation added yet another mystery to the many deceptions faced by Judge Rosario Priore.