White House Military Aides: Officers from the Army, Navy, Air Force, Marines, and Coast Guard serve as military aides to the President. Nuclear Football: One of their key responsibilities is to carry the President's emergency satchel, which contains nuclear launch codes. Ceremonial Duties: They also assist the President during official events and provide logistical support. Aiguillette: They wear an aiguillette, a braided cord on their shoulder, as a badge of office.