For more than 54 years, a Bay Area woman has wondered what happened to her husband, a U.S. Air Force fighter pilot missing in action during the Vietnam War. Now at age 90, Joyce De Soto of Burlingame finally has answers. They were high school sweethearts at Balboa High School in San Francisco before tying the knot. "He had the most beautiful smile, and he was really sweet and really smart," De Soto said of her late husband Ernie De Soto. The De Sotos had three children and were married for 12 years before the family received devastating news: Ernie...