Joaquin "Jack" Garcia is a retired FBI agent who worked 24 of his 26 years in the bureau undercover. He spent three years infiltrating the Gambino crime family under the alias "Jack Falcone." Garcia talks to Business Insider about his unconventional entry into the FBI, including challenges with his weight and Cuban background. He discusses the "mob school" he attended to learn about the mannerisms and foods of New York's Italian mafia. Garcia's close relationship with the Gambino captain Greg