My paternal uncle, Toshihiko, was shot up when Japan invaded Hainan Island in early 1939 and died, as a result, three years later at age 27. This is one of the things that came to mind recently when I read news stories about three veterans of U.S. wars in Afghanistan and Iraq.

On Feb. 2, at a Texas shooting range, Chris Kyle, a 38-year-old former Navy SEAL, and Chad Littlefield, a 35-year-old military veteran, were shot dead by Eddie Routh, a 25-year-old former marine marksman whom Kyle thought he was helping.

Kyle, ¡°the most lethal sniper in U.S. military history,¡± as the subtitle of his autobiography ¡°American Sniper,¡± put it, is said to have killed anywhere from 150 to 255 Iraqis. He had started an organization to help fellow veterans with post-traumatic stress disorder (PTSD), the affliction that he suffered himself. Routh was among those he had extended his hand to.