A 28-year-old man has been charged in federal court with traveling out of Utah with a 15-year-old West Valley City girl for the purpose of engaging in sexual activity. Nelson Acosta-Meledez was arrested Sunday at a Missouri bus terminal in the company of the girl, who was taken into protective custody. They were on their way to Atlanta, where, the girl told investigators, they were going to live as boyfriend and girlfriend, according to a criminal complaint filed Thursday in U.S.