Wives of Vietnam POWs Were Told to Keep Quiet About Their Husbands’ Captivity. Here’s What Convinced Them to Go Public BY HEATH HARDAGE LEE  When she saw an official-looking blue car pull up in her driveway on April 24, 1967, Helene Knapp knew the news could not be good. Her doorbell rang and an Air Force … Continue reading The Origin of the National League of POW/MIA Families