According to an after-action report for the afternoon of March 13, 1969, John Kerry's unit of five Swift boats encountered enemy automatic and small-arms fire from both banks along a 5,000-meter stretch of the Bay Hap River in Vietnam. Three enemy mines were detonated, the report states, one of which damaged Kerry's boat. According to that same report and a separate casualty report, Kerry received a minor contusion on his arm and shrapnel in his buttocks from the incident. On the basis of these two reports, Kerry received a Bronze Star--and importantly, his third Purple Heart, which allowed him to...