S3 Technologies : ("S3" stood for "Simulation, Systems, and Services")
Part-owned (via GSE) as of 1995(?) by National Patent Development Corporation .
"In May 1990 Link-Miles Simulation Corporation, the domestic simulator business in Columbia, MD, announced a joint venture named General Energy Technologies with NPO Energia of the Soviet Union. General Energy Technologies would be a Soviet enterprise centered in Moscow and would provide Soviet and Eastern European simulation, training, and engineering services in energy related fields including nuclear and fossil fuel power plants, and chemical processing."
Feb 14 1991 - see above !!!
In April 1990 Link-Miles Simulation Corporation of Columbia signed a contract to provide nuclear plant simulators to SYPRO of Sweden and Pennsylvania Power & Light Co. Link-Miles also won a contract for an ethylene plant simulator.
In August 1990 Link-Miles Simulation Corporation of Columbia, MD, a manufacturer of nuclear power-plant control room simulators, was renamed S3 Technologies. Before that it was Industrial Simulation Corporation, and even earlier, the Link Simulation Systems Division of Singer. In September 1993 ManTech International bought S3 Technologies.