Okay. I lied. It was me that tried to knife him, and I was the one who died, and sent the hatemail.
It was on White Pass at the attackers 1st base. I kept sneaking up there and knifing this one guy because he would constantly jump on the Heavy MG. Of course I would die because I would be out of bounds. But I still knifed him 2 times, and when I went for the 3rd I watched my knife plunge into him, blood splurt. Then my screen got all weird, saw a black line for a split second, heard that headshot PING! sound, and then I died, and saw the guys name that I was trying to knife, with the Head shot symbol and the name of the HMG he was on. Then the kill cam showed him and you could clearly see my body behind him.
And this was one of the armored HMGs. You know, one of the ones THAT CAN'T TURN AROUND!!