On some of the killcams I have no idea how they know where I am from so far away. I mean, I have been cloaked, in the shadows and BAM, I get head shot. I have tried looking where I know the snipers are, but I cannot for the life of me see them like they seem to be able to see me.
My eyes aren't that bad either

Most of the kills I can live with as I am an older guy, but these sort of kills stump me.
I do not want to say they are cheating, because it is too hard to say because of there k/d ratio, so there must be a giveaway somewhere?