Ad features vets who claim Kerry "lied" to get Vietnam medals. But one accuser quickly recants, and other witnesses disagree. August 6, 2004 Modified: August 6, 2004 A group funded by the biggest Republican campaign donor in Texas began running an attack ad Aug. 5 in which former Swift Boat veterans claim Kerry lied to get one of his two decorations for bravery and two of his three purple hearts. However, one of the veterans who appears in the ad has already recanted his principal accusation against Kerry, in an interview with the Boston Globe Some other veterans who accuse...