By JOHN ISMAY U.S. forces operating near Ecuador on Saturday intercepted and destroyed several commercial vessels believed to be used for refueling boats smuggling drugs to the United States. It was the fourth interdiction of vessels used as floating refueling platforms in the eastern Pacific, according to a U.S. official, who said no one on either side was hurt or killed. The mission was carried out as part of U.S. Southern Command’s efforts to hinder narcotics smugglers in the Pacific and…