KY-57 was a wide-band secure voice (WBSV) encryption unit, developed in the mid-1970s by the US National Security Agency (NSA)
BLEND (Blender, filesize: 2.28 MB), OBJ (OBJ, filesize: 5.57 MB), FBX (Autodesk FBX, filesize: 9.07 MB), GLTF (glTF, filesize: 97.1 MB), FBM (fbm, filesize: 4.54 MB)