Kirby's just a career-oriented goober. He has no idea about honor, duty, honesty, morals, or anything else. He doesn't care about anything but himself. Dick Marcinko called such people C-squared (Can't Cuhnt) officers.
"Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing." Robert E. Howard