Grand Jury Testimony and Materials; Authorizes court to disclose certain grand jury testimony & materials in certain circumstances to further justice; requires clerk of court to take possession of & preserve certain grand jury materials; prohibits person from disposing of or destroying such materials; specifies materials required to be preserved; requires clerk of court to maintain chain of custody list for such materials during grand jury proceeding; specifies manner in which clerk of court shall store & provide access to stored materials; prohibits certain persons from accessing such materials; requires documentation of authorized person's access to such materials; requires state attorney & his or her employees to preserve certain grand jury materials; requires preserved materials to be retained for certain period of time; requires Office of State Courts Administrator to adopt certain rules; authorizes Office of State Courts Administrator to perform inspections for certain purposes; requires disclosure & provision of access to materials upon court order; prohibits intentional destruction or alteration of grand jury materials; provides penalty; requires FDLE to investigate alleged violations of preservation requirements.