 Gravano ultimately opted to turn state's evidence, formally agreeing to testify on November 13, 1991.Gotti and Locascio were tried in the U.S. District Court for the Eastern District of New York before District Judge I. Leo Glasser.Jury selection began in January 1992 with an anonymous jury and, for the first time in a Brooklyn federal case, fully sequestered during the trial due to Gotti's reputation for jury tampering.