Seaman 1st Class Walt Stein’s life was cut short on December 7, 1941, when the Japanese attacked Pearl Harbor, Hawaii. The 20-year-old sailor from Cheyenne, Wyoming, was serving onboard the battleship USS Oklahoma when Japanese torpedo bombers struck the ship multiple times. The Oklahoma quickly capsized, killing 429 crewmen, including Stein. But his body remained unidentified, leaving his family to wonder about his fate for decades.