(CNN) -- By the end of the Super Bowl on Sunday night, one or more professional football players will be hailed for their valor, for their guts, for their devotion to their teammates. They will be called heroes. And more than 100 million people will be watching. But because, predictably, those laudatory words will be thrown around so casually on Sunday, perhaps we can take a few minutes here to address an act of genuine valor that happened exactly 70 years ago today. It wasn't televised. There were no sponsors. On February 3, 1943, an Army transport ship called the Dorchester, carrying American soldiers through the icy North Atlantic on their way to serve in World War II, was about 100 miles off the coast of Greenland in rough sea. More than 900 people were on board.
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Bob Greene: On Super Bowl Sunday, football players will be called gutsy, heroic
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He says for real heroism, look to four WWII chaplains who sacrificed lives on this day in 1943
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He says the helped young soldiers to safety, giving up life vests, when their ship hit
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Greene: They went down with ship. Think of them while you're cheering football "heroes"
And some of the survivors, in official accounts given to the @placeholder, and in interviews after the war, reported what they saw as the ship went down: