An investigation by The Washington Post into what happened that day suggests that neither side has been entirely forthcoming, and that each has withheld information from the public record.

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The Post's research shows that both accounts contain significant flaws and factual errors. This reconstruction of the climactic day in Kerry's military career is based on more than two dozen interviews with former crewmates and officers who served with him, as well as research in the Naval Historical Center here, where the Swift boat records are preserved. Kerry himself was the only surviving skipper on the river then who declined a request for an interview.

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In "Tour of Duty," these thoughts are attributed to a "diary" kept by Kerry. But the endnotes to Brinkley's book say that Kerry "did not keep diaries in these weeks in February and March 1969 when the fighting was most intense." In the acknowledgments to his book, Brinkley suggests that he took at least some of the passages from an unfinished book proposal Kerry prepared some time after November 1971, more than two years after he had returned home from Vietnam.

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Even if Kerry did write the March 13 after-action report, it seems unlikely that he would have been the source of the information about "enemy bullets" flying around Thurlow. The official witness to those events, according to Thurlow's medal recommendation form, was Radioman 1st Class Robert Lambert, a member of his crew. The Post was unable to trace Lambert before publication of this article.

In a telephone interview, the head of Swift Boat Veterans for Truth, retired Adm. Roy Hoffmann, who commanded all Swift boats in Vietnam, said he believed that Kerry wrote the March 13 after-action report on the basis of numerical identifiers at the top of the form. He later acknowledged that the numbers referred to the Swift boat unit, and not to Kerry personally. "It's not cast-iron, I agree with you," he said.

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Although Kerry campaign officials insist that they have published Kerry's full military records on their Web site (with the exception of medical records shown briefly to reporters earlier this year), they have not permitted independent access to his original Navy records. A Freedom of Information Act request by The Post for Kerry's records produced six pages of information. A spokesman for the Navy Personnel Command, Mike McClellan, said he was not authorized to release the full file, which consists of at least a hundred pages.

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