Guam Grand Jury Instruction, also known as the "Guam GI," refers to the specific set of guidelines provided by the court to members of the grand jury in Guam, a territory of the United States. These instructions outline the legal principles and procedures that the grand jurors must adhere to during their service. By following these guidelines, the grand jury can effectively carry out its vital role within the criminal justice system. The Guam Grand Jury Instruction serves as a comprehensive and detailed reference manual that educates the grand jurors about their duties, responsibilities, and the legal standards they need to apply in making an informed decision. It ensures that the grand jury operates in a fair and impartial manner while investigating potential criminal offenses and determining whether there is enough evidence to indict a suspect. The Guam GI covers a wide range of topics relevant to the grand jury's functions. These may include instructions on the grand jury selection process, the jurisdiction of the grand jury, the secrecy of the proceedings, the subpoena power, the investigative powers, the examination of witnesses, the evaluation of evidence, the legal elements of various crimes, and the voting procedures for indictment. Different types of Guam Grand Jury Instruction may be categorized based on the specific crimes they pertain to, such as instructions for white-collar crimes, drug offenses, violent offenses, or public corruption cases. There may also be specific instructions provided for different stages of the grand jury proceedings, including the initial embankment, presentation of evidence, deliberations, and requirements for voting on an indictment. Keywords: Guam Grand Jury Instruction, Guam GI, grand jury, guidelines, legal principles, procedures, criminal justice system, duties, responsibilities, legal standards, investigating, potential criminal offenses, indict, suspect, fairness, impartiality, evidence, jurisdiction, secrecy, subpoena power, witnesses, voting procedures, indictment, white-collar crimes, drug offenses, violent offenses, public corruption cases, embankment, evidence presentation, deliberations.