Ashton Carter, who served as President Barack Obama's final defense secretary, has died, his family said. He was 68. Carter is pictured here during his confirmation hearing before the Senate Armed Services Committee in February 2015 on Capitol Hill.
Mandatory Credit:	Alex Wong/Getty Images

Ashton Carter, who served as President Barack Obama's final defense secretary, has died, his family said. He was 68. Carter is pictured here during his confirmation hearing before the Senate Armed Services Committee in February 2015 on Capitol Hill.
Mandatory Credit: Alex Wong/Getty Images

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Ash Carter, former defense secretary under Obama, dies at 68

Ashton Carter, who served as President Barack Obama's final defense secretary, has died, his family said. He was 68.