You got the entry for Tom Friendly wrong. Tom had never shot James "Sawyer" Ford in "Exodus". Sawyer had raised his gun to shoot Tom and one of Tom's companions beat him to the draw and shot the con man. Also, Sawyer had lied about killing Tom for Walt's kidnapping. Sawyer had never really liked Walt. And he had stopped caring about Walt's situation the moment he had stepped foot back on the island in early Season Two. In "The Hunting Party", Sawyer had made it clear that he wanted to kill Tom in retaliation for him getting shot in the Season One finale.