One hundred twenty-nine American sailors die when the <a href="https://en.wikipedia.org/wiki/Submarine" id="mw9Q" rel="mw:WikiLink" title="Submarine">submarine</a> <a about="#mwt73" data-mw='{"parts":[{"template":{"target":{"wt":"USS","href":"./Template:USS"},"params":{"1":{"wt":"Thresher"},"2":{"wt":"SSN-593"},"3":{"wt":"6"}},"i":0}}]}' href="https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)" id="mw9g" rel="mw:WikiLink" title="USS Thresher (SSN-593)" typeof="mw:Transclusion">USS<span typeof="mw:Entity"> </span><i>Thresher</i></a> sinks at sea.