Darrell BOYE, Kirk Snyder, Larry Etsitty, Jr., Sarah Habaadih, Jones R. Begay, Johnny Peshlakia, Ronald Platerio, Rex Butler, Tryone Benally, Chalene Bahe, Kenny James, Rosalyn Benally, Leroy Butler, Lucy Lane, Dale Dennison, Randell Tomasyo, Marjorie Henderson, Patricia Yellowhair, Clinton Curtis, Henry K. Moore, Irene Six, Thomas Esitty, Genevieve Morgan, Darrell Harvey, and Leland Tom, Plaintiff-Appellants, v. UNITED STATES, Defendant-Appellee