Almost eight years ago, presidential candidate John Kerry accepted the Democratic nomination with the infamous line: “I’m John Kerry, and I’m reporting for duty.” His military service, in a war three decades old, became the centerpiece of his campaign. Within weeks, the Republicans had turned what was seen as one of Kerry’s strongest assets against him. Swift Boats Veterans for Truth—which included over 200 Vietnam veterans, most who hadn’t even served with Kerry—succeeded in raising doubts about the heroic narrative Kerry was selling. What seemingly started as a scratch turned into a sucking chest wound for his campaign. Yesterday, the...