By BRIAN SKOLOFF, Associated Press Writer Sat Aug 20,12:24 PM ET SAN FRANCISCO - The USS Iowa joined in battles from World War II to Korea to the Persian Gulf. It carried President Franklin Roosevelt home from the Teheran conference of allied leaders, and four decades later, suffered one of the nation's most deadly military accidents. Veterans groups and history buffs had hoped that tourists in San Francisco could walk the same teak decks where sailors dodged Japanese machine-gun fire and fired 16-inch guns that helped win battles across the South Pacific. Instead, it appears that the retired battleship is...