But Droz, a key witness in the ongoing debate over Kerry's service record, is missing from it, killed in a rocket attack in Vietnam in April 1969 days after Kerry returned home. While Droz cannot defend Kerry, his widow, Judith Droz Keyes, said she feels she must. She said she is confident that her husband would defend both Kerry's record in Vietnam and his antiwar activism. "John Kerry was a good friend, and a loyal friend to my late husband," she said in a telephone interview from her office in San Francisco. "My husband isn't here to speak, and all...