A U.S. soldier was shot to death while on a routine jeep patrol at Palmerola air base, the center of U.S. operations in Honduras, U.S. military officials said. They said they had no clues to the killers of Staff Sgt. Randall Harris, 34, but said his death is being treated as a criminal homicide and not as a terrorist attack. No one else was wounded in the shooting, and it was not known if another American soldier or a Honduran was responsible, a base spokesman said. Harris, of Wilmington, Ohio, was married with three children, officials said. He was in Honduras on temporary assignment from Ft. Bliss, Tex.