LINCOLN (AP) – One of four men convicted in a deadly Norfolk bank shooting wants a federal court to overturn his death sentence. Lawyers for 37-year-old Erick Vela filed the appeal this week. It argues in part that he’s intellectually disabled and that executing him would violate his Eighth Amendment protection against cruel and unusual punishment. Vela pleaded guilty in June 2003. Vela and two other men were sentenced to death for the five slayings at a U.S. Bank branch in Norfolk on Sept. 26, 2002. A fourth man who served as a lookout was sentenced to five life sentences. Last July the Nebraska Supreme Court rejected Vela’s attempt to have his murder convictions overturned. In that appeal he’d said the lawyer defending him was incompetent.