Some service members are exceptional because of their rank or combat heroics. But some are remarkable for simply saying “yes” every single time the nation needed them. Multimedia journalist Dustin Diaz traveled to hear the story of a man who answered the nation’s call again and again, from Vietnam to Afghanistan.

This soldier just retired – and he’s served in every war since Vietnam

Some service members are exceptional because of their rank or combat heroics. But some are remarkable for simply saying “yes” every single time the nation needed them.