Premise: Colin Powell . Powell was the first , and so far the only , African American to serve on the Joint Chiefs of Staff . The Joint Chiefs of Staff ( JCS ) is a body of senior uniformed leaders in the United States Department of Defense who advise the President of the United States , the Secretary of Defense , the Homeland Security Council and the National Security Council on military matters .
Hypothesis: Colin Powell served in a body of the United States Department of Defense.
Label: ENTAILMENT