That's always how I saw that frame, when you first see Bucky's eyes. He looked so sad, like he was about to cry. Maybe after every kill he makes, after every target he takes down, he cries a little and he never knows why. <<in a deleted scene of the First Avenger, it showed Bucky in war before Hydra experimented on him. He almost cried every time he took a shot, ended another life. And he was scared. So scared.<<< it all hurts!