关键词：Veterans' Benefits; U. S. Court of Appeals; Federal Circuit; Congress; Charles G. Mills; veterans' pensions; U.S. Court of Veteran's Appeals; Ct. of Appeals for Veterans' Claims; Veterans Judicial Review Act; Federal Circuit; Denial of review; question of fact; statutory interpretation; direct review; rules and regulations; Notice of Disagreement; Standard of Review; Clear and Unmistakable Error; Duty to Assist; de novo
