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    Larry Jay Levine was sentenced to 10 years in prison and later used his experience to start his company, Wall Street Prison Consultants.

    According to Wall Street Prison Consultants, their founder served some time behind bars for conspiracy charges related to narcotics, securities fraud, obstruction of justice, and possession of automatic weapons.

    When Levine was released, he used his experience and knowledge to become a federal prison consultant, providing "prison survival education courses" and legal services to lawyers and offenders.