Donald A. Davis  Donald Alan Davis (born October 5, 1939) is an American writer, novelist and former war correspondent. He is a writer of military histories, military thrillers, and, along with Jack Coughlin, is co-author of the "New York Times" bestselling book, "Shooter". In 2007, with St. Martin's Press, Coughlin and Davis began writing their ongoing military-thriller series featuring Marine protagonist Kyle Swanson.