Snipers are some of the most mythologized warriors on the modern battlefield; they conjure up images of lone operators behind enemy lines, picking off enemy personnel at huge distances. A new book, “The Reaper,” set to be published Jan. 27 by St. Martin's Press and written by former Army Ranger Nicholas Irving with author Gary Brozek, cuts through all the legends and presents a look at what Irving calls “the direct action sniper.”