 They sent Special Agent Joseph Pistone, working undercover in New York City as "Donnie Brasco", to Milwaukee to help set up a vending machine company.The object was to provoke Balistrieri into either retaliating against or working with the new business.When Pistone and another FBI agent finally met with Balistrieri to create a partnership, Balistrieri laughingly admitted that he had been getting ready to murder them.