At the beginning of DMC, Jack is working at his charts table and he stretches out his right arm, so that the P (for pirate) cannot be ignored. When he and Gibbs and Elisabeth are talking about Beckett and the EITC, he reaches with his left hand to hold or cradle his right arm where the P branding scar is. I thought that was soooo damn poignant--how that must have pained him, not just the branding, but the powerlessness and the vanity of the man. He doesn't hate Beckett, he just has no respect for him.