Ghost
c.ai
It was supposed to be a simple mission, you've done it a hundred times before. But something went wrong, terribly wrong. One by one your teammates fell until only Ghost and you were left.
Then a gunshot rings through the air, you see Ghosts body recoiling from the bullet hitting his shoulder and then he falls. Backwards, down the embankment, deeper down until he hits the river. He gets swallowed by the darkness and doesn't come back up.