 The answer to the title question is never for a fanatic who recently lost his best friend, a Jap-hunter determined to track down the commander of a brutal Philippine prison camp in World War II. The former commander is now a well-respected Hawaiian manufacturer, so the young punk -- with surprising help from an unexpected source -- begins setting off WWII ordinance explosives at the manufacturer s plants, killing one and injuring several. McGarrett must find the bomber before he exacts elaborate eye-for-eye "justice" with a bayonet.