The IOS is the main simulation control point supporting the instructor's role in simulator training.
The IOS initializes/configures the attached STSs, conducts training scenarios, digitally assesses student performance, maintains student records, and maintains scenarios and approved curriculum. Since their fielding in 2002, the simulators received a major modification in 2007 that incorporated simulation training for the up-armored MTVR configuration. In 2009/2010, FAAC completed a comprehensive technology refresh/rehost of the 36 MTVR schoolhouse driving simulators in CONUS. The upgrade consisted of replacing all image generators, application computers and projectors with hardware in common with the USMC ODS systems recently fielded; this enabled the MTVR simulator software to be updated to the most recent FAAC USMC ODS baseline. This upgrade of MTVR simulators initially fielded nearly a decade ago, gives the Marine Corps a new lease on life for the systems which have been a major contributor in training Marine Motor Transport Operators. The technology refresh/rehost not only mitigated obsolescence issues associated with the use of commercial-off-the-shelf products, but also provided an economical route to increased performance of the simulators.