
Marine Gen. James "Mad Dog" Mattis (ret.), nominated by President-elect Donald Trump's for defense secretary, testifying before the Senate Armed Services Committee on Thursday. (Screenshot)
Watch: Defense Secretary Nominee James "Mad Dog" Mattis Faces Senate Confirmation
Retired U.S. Marine Corps General James "Mad Dog" Mattis--who once said of his wartime service that it's "fun to shoot" people--is testifying before the Senate Armed Services Committee on Thursday as he tries to receive confirmation to be the next U.S. Secretary of Defense.
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