 away from the courthouse), in order to prevent the media from observing the identity of witnesses coming and going.The grand jury was selected to deal solely with the Memorial case, rather than the dozens to hundreds grand juries normally hear; prosecutors stated it could hear testimony for months.The unusual moves prompted legal observers to speculate that the district attorney considered the evidence ambiguous and wanted to be able to assure the public of a thorough investigation if he decided to drop the case without bringing formal charges.