He just mutilates this dummy with a knife!
Navy Seal, wielding the Recon 1, decapitated, amputated, and disemboweled the gel torso with a stabbing speed of 32fps. His stabbing speed was determined to be slightly less than the punching speed of the average Olympic boxer.
If you look at where he is striking, he is hitting several major arteries and critical areas of the chest. He’s not having a seizure with a knife in his hand, he know’s how to kill and he knows how to do it fast.