Before he died at Pearl Harbor, less than a month after turning 18, Gerald Lehman sent home to Michigan letters that his mother came to treasure.

Unknowingly, Lehman sent home to those who loved him something else, something that wouldn't be useful until decades later: his own DNA.

Sixty-eight years after he was killed on Dec. 7, 1941, DNA lifted from the envelopes Lehman had licked helped the Joint POW/MIA Accounting Command positively identify the young sailor's remains.

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