The Washington Post describes a court case involving a conspiracy between a secretive Pentagon office and an auto-mechanic/machinist to manufacture untraceable sound suppressors. The Pentagon office is the Directorate for Plans, Policy, Oversight and Integration, composed of fewer than 10 civilian employees, most of them retired military personnel. The Directorate is supposed to provide support and oversight for Navy and Marine intelligence operations, but not actually run any operations.
The interesting part is what the silencers were to be used for. From the article:
At one pretrial hearing, a defense attorney for the auto mechanic, Mark S. Landersman of Temecula, Calif., accused the Navy of impeding the investigation by destroying a secret stash of automatic rifles that the silencers were designed to fit. Prosecutors immediately objected to further discussion in open court, calling it a classified matter.
The destroyed weapons were part of a stockpile of about 1,600 AK-47-style rifles that the U.S. military had collected overseas and stored in a warehouse in Pennsylvania, according to a source familiar with the investigation.
If the foreign-made weapons were equipped with unmarked silencers, the source said, the weapons could have been used by U.S. or foreign forces for special operations in other countries without any risk that they would be traced back to the United States.After news of the investigation into the silencers became public, the Navy destroyed documents from the Directorate.