<P> In addition to their primary role in screening criminal prosecutions and assisting in the investigation of crimes, grand juries in California, Florida, and some other U.S. states are sometimes utilized to perform an investigative and policy audit function similar to that filled by the Government Accountability Office in the United States federal government and legislative state auditors in many U.S. states . </P> <P> A third kind of jury, known as a coroner's jury can be convened in some common law jurisdiction in connection with an inquest by a coroner . A coroner is a public official (often an elected local government official in the United States), who is charged with determining the circumstances leading to a death in ambiguous or suspicious cases . A coroner's jury is generally a body that a coroner can convene on an optional basis in order to increase public confidence in the coroner's finding where there might otherwise be a controversy . In practice, coroner's juries are most often convened in order to avoid the appearance of impropriety by one governmental official in the criminal justice system toward another if no charges are filed against the person causing the death, when a governmental party such as a law enforcement officer is involved in the death . </P> <P> Serving on a jury is normally compulsory for individuals who are qualified for jury service . A jury is intended to be an impartial panel capable of reaching a verdict . Procedures and requirements may include a fluent understanding of the language and the opportunity to test jurors' neutrality or otherwise exclude jurors who are perceived as likely to be less than neutral or partial to one side . Juries are initially chosen randomly, usually from the eligible population of adult citizens residing in the court's jurisdictional area . Jury selection in the United States usually includes organized questioning of the prospective jurors (jury pool) by the lawyers for the plaintiff and the defendant and by the judge--voir dire--as well as rejecting some jurors because of bias or inability to properly serve ("challenge for cause"), and the discretionary right of each side to reject a specified number of jurors without having to prove a proper cause for the rejection ("peremptory challenge"), before the jury is impaneled . </P> <P> A head juror is called the "foreperson", "foreman" or "presiding juror". The foreperson may be chosen before the trial begins, or at the beginning of the jury's deliberations . The foreperson may be selected by the judge or by vote of the jurors, depending on the jurisdiction . The foreperson's role may include asking questions (usually to the judge) on behalf of the jury, facilitating jury discussions, and announcing the verdict of the jury . </P>

Who can and is required by law to do jury service