Ph.D History, Boston College
Dr. O'Brien is the author of Blackrobes in Blue: the Naval Chaplaincy of John P. Foley, which is listed as a resource for Catholics in the Armed Forces at CatholicMil.com. Dr. O'Brien has published extensively in such periodicals as Our Sunday Visitor, Columbia, the Boston Pilot, Military, Cobblestone, academic journals and other popular periodicals. He also writes regularly for The Latin Mass Magazine, providing biographies of Catholics who have fought for what they believed right, often against terrible odds.