Secret service trainings and ideas

Silent, locking switchblades and folding knives. So there's no click when the knife locks in to place and should stay in place, unless closing it again according to the delocking mechanism. Stealth, locking folding knives. (idea)

Filming proof stealthed, when it's dark This is possible with a small infrared (IR) camera with a small display. The light won't be visable but it's posible to film and see around with the display of the camera, because of the infrared lightsource. -The display should be dimmed though. For inside and outside Important: First tests.

Walking on grass, is more silent then on stone or gravel for example. Especially when walking somewhat fast or fast. And not hitting twigs is important though.