On this Memorial Day weekend, when America honors its war dead, pause to think of one particular duty that befell Gary Cotter as a 17-year-old merchant seaman during World War II.

It was early 1945, on the island of Manus, in the South Pacific, and he and another man were ordered to stay aboard a ruined transport ship that had been rammed by a tanker. One of its hulls was breached, and many men died.