It is not exactly random but it appears as random to an outsider. The cases are taken out of the bin by receipt date and then stacked-up in the production line for distribution among the IIOs. As IIO's become available cases are assigned to IIOs. Once these cases reach IIO's desk, they become subjet to the priorities, pulls and pressures of the IIO's. Cases could sit at IIO's desks for 5 to 6 months. Generally, once the case is assigned to IIO's, it moves pretty fast. However, in some unfortunate cases, it may be sitting at an IIO's desk for a long time.