July 24 (UPI) -- The U.S. Navy needs to complete its shipbuilding program and modernize its weapons systems to effectively address the nation's defense needs, Adm. Daryl Caudle told the Senate Armed Services Committee. Committee members questioned Caudle on Thursday morning to consider his nomination for Chief of Naval Operations and reappointment to the grade of admiral. "I view this nomination as a solemn opportunity to ensure the nation's maritime dominance never is surpassed by competitors