Big Apple
Although the history of "Big Apple " was once thought a mystery, a clearer picture of the term's history has emerged due to the work of amateur etymologist Barry Popik, and Gerald Cohen of Missouri University of Science and Technology. A number of false theories had previously existed, including a claim that the term derived from a woman named Eve who ran a brothel in the city. This was subsequently exposed as a hoax.
Joseph D. Pistone
Pistone was selected to be an undercover agent because he was of Sicilian heritage, fluent in Italian and acquainted with the mob from growing up in New Jersey. He also said that he did not perspire under pressure and was aware of the Mafia's codes of conduct and system. The operation was given the code name "Sun-Apple" after the locations of its two simultaneous operations: Miami ("Sunny Miami") and New York City ("The Big Apple"). After extensive preparation including FBI gemology classes and again using the alias Donnie Brasco, he went undercover as a jewel thief.