Larson was among the nearly 160,000 Allied troops who stormed the Normandy shore on June 6, 1944, surviving machine-gun fire when he landed on Omaha Beach.
Decades after Staff Sgt. William Owens' heroic actions at La Fiere Bridge, his Bronze Star was posthumously upgraded thanks to the efforts of a veteran.
The U.S. military and Guam emergency response teams logged 120 hours and traversed 11,000 square nautical miles in an effort to find the missing sailor.