Bill Burkett is a former Texas Army National Guard member who holds a long time anti-Bush grudge. He's been claiming for years that he saw Bush ANG documents being 'scrubbed' at the Texas Guard HQ in 1997. This was picked up by the media in February 2004 and debunked by some of other guard members.
This guy has had two mental breakdowns and maybe a history of paranoia. He's been ranting on the internet for years. Newsweek has fingered him as a primary source on the CBS story. If CBS fell for him, then he's far from an unbiased unimpeachable witness as they claim.
In the best case scenario for Kerry, and everything his crew charges about Bush's guard service is true, does he gain a single vote?