Laurence Fishburne: “We owe it to all the men and women who serve in the armed forces.”

War is dirty and destructive. That’s the clear and concise message in Richard Linklater’s war drama, “Last Flag Flying,” which follows three Vietnam War vets who reunite after 30 years to bury a young Marine killed in the Iraq War. Based on a novel by Darry Ponicsan and set in 2003, the film starts …