jonnynonos, I don't know who pulled the trigger. I just know it was not my father. He saw Mooney earlier in the evening on that June night in 1975. He loved Mooney. Auippa/Cerone would never have trusted him to do the job. He would have warned Mooney.
I don't know who actually pulled the trigger but I can tell you that Dominic Blasi set it up because he went over there afterwards.

If I had to TAKE A GUESS, it was Dominic Blasi who also pulled the trigger. He was presently the driver bodyguard for Accardo and was direct with Auippa/Cerone. He fit nicely into the new regime. My father had to leave town for awhile. It was a terrible time.