Local veterans have mixed views on the validity of recent political attacks on Democratic presidential candidate John Kerry's military record in Vietnam. John Mezes, who served in the Air Force from 1956 to 1960, was suspicious of how Kerry could have won three Purple Hearts, a Bronze Star and a Silver Star in a four-month period. "How did he win so many medals in so short a time?" asked Mezes, who owns a Bridgeport business that refurbishes trucks. "Isn't it suspicious it happened in only four months?" In contrast, Marine veteran Kingsley McAlpine of Bridgeport doesn't question Kerry's heroics in...