“Capping an investigation that began almost two years ago, separate trials are scheduled this month in U.S. District Court in Alexandria, Va., for a civilian Navy intelligence official and a hot-rod auto mechanic from California who prosecutors allege conspired to manufacture an untraceable batch of automatic-rifle silencers. The exact purpose of the silencers remains hazy, but court filings and pretrial testimony suggest they were part of a top-secret operation that would help arm guerrillas or commandos overseas.”
Source: Probe of silencers leads to web of Pentagon secrets – The Washington Post