For 42 years, Ann Duffy wondered exactly what happened on April 27, 1972.That was the day her husband, Thomas Duffy, went missing in action in Vietnam after the F-4 Phantom he was piloting went down over Da Nang bay.About all Ann knew was that the radar/weapons officer in the backseat had ejected and survived.But she never knew why "Duff," as she calls her husband, didn't make it out of the fighter jet.Read more on Colorado Springs Gazette