Claim: The Department of the Air Force is headed by the Secretary of the Air Force, a civilian appointed by the president, by and with the advice and consent of the Senate.
Evidence: The Department of the Air Force is headed by the Secretary of the Air Force (SAF/OS), a civilian, who has the authority to conduct all of its affairs, subject to the authority, direction and control of the Secretary of Defense. The secretary of the Air Force is a civilian appointed by the president, by and with the advice and consent of the Senate.