My dad in Vietnam On September 1, 2007 my father passed away from ischemic heart disease , which is a fancy way of saying his arteries were so blocked that blood couldn't travel back to his heart. It's been six years since his death, but the wound was ripped open last year when my mom and I found out his death was tied to his military service in Vietnam. It's not fair, I lamented, It's just not fair. Agent Orange, which was an herbicide used by the U.S. military in Vietnam, has been linked to the deaths of many veterans. The official list of health complications includes 14 different diseases, but ischemic heart disease didn't make the list until three years ago. The heart wrenching part of all of this is that several individuals have told my mother that the doctors knew Agent Orange was the cause -- they were simply told by the government to keep it under wraps. Awful. I'm not all about debating government conspiracy theories, but that was compl...