Bishop Donald J. Kettler, center, celebrates Mass marking the 50th anniversary of the Diocese of Fairbanks, Alaska, Aug. 12 at Sacred Heart Cathedral. Fairbanks is the only diocese in the U.S. still considered a mission territory. It encompasses 410,000 square miles. Just less than 10 percent of its population is Catholic. (CNS photo/JR Ancheta) (Aug. 13, 2012) See FAIRBANKS to come.