Nicky was a Casino Host of the Palazzo Azzurro. In 1979, he helped organize the Dons meeting inside the casino. During the meeting he was one of the few who survived the helicopter attack by Joey Zasa's hitmen unscathed. He was part of Zasa's entourage during the Feast of San Gennaro in Little Italy, Manhattan. He managed to escape when Zasa and his bodyguards were attacked and killed by Vincent Mancini's hitmen.
As the host of the Palazzo Azzurro and being part of Joey Zasa's inner circle, he was likely a member of the Zasa regime within the Corleone family and in on the plot to kill the Dons during the meeting.