The Department of Justice announced that a California man pleaded guilty to a scheme that involved selling more than $3.5 million worth of deceptive fan assemblies to the Department of Defense’s Defense Logistics Agency (DLA).

According to the DOJ, the defendant, 63-year-old Steve H.S. Kim, controlled an unnamed company that sold fan assemblies to the DLA. But the fan assemblies were either counterfeit or misrepresented to be new. The DOJ added that some of the counterfeit fans went on to be installed, or were planned to be installed, with electrical components on an aircraft’s laser system, a nuclear submarine and a surface-to-air missile system.