Ashton Carter
Ashton Baldwin "Ash" Carter (September 24, 1954 – October 24, 2022) was an American politician, military civillian official and academic. He was the United States Secretary of Defense from 2015 to 2017. He is also a physicist and a former Harvard University professor of Science and International Affairs. He was nominated by President Barack Obama, and confirmed by the Senate by a vote of 93–5, to replace Chuck Hagel as the US Secretary of Defense.