MANHATTAN, Kan. (AP) _ The chairman of the Joint Chiefs of Staff says he wants to increase the national conversation about war veterans and how they're treated and regarded in society. General Martin Dempsey spoke Monday to a large audience of soldiers, faculty and students at Kansas State University. He said he believes the nation has a positive image of its military men and women. But Dempsey says that after many years of war, it's important for veterans and the nation to talk about the role of those who have served, where they fit in society and whether they're regarded as heroes, victims or average citizens. Dempsey's speech was part of Kansas State's Landon Lecture series.