User blog comment:Drkdragonz66/Black Ops II Live on TwitchTV from August 15-19/@comment-99.36.25.66-20120815170820/@comment-1263839-20120816195944

Because they didn't know you were about to come up and shoot them in the face, you shoot them in the face and they knife you, you die. That's panic knifing when they panicked and knifed you because you caught them by surprise.