TO GO WITH AFP STORY US-VOTE-VIETNAM-MILITARY-MCCAIN BY FRANK ZELLERNguyen Tien Tran, 75, who was John McCain's prison guard, stands at his home in Hanoi on May 5, 2008. Tran said "If he becomes presdient of the United States, I would advise him not to be trapped in the mistaken old ways of US presidents, of bringing troops abroad and of making more war." AFP PHOTO/Frank ZELLER