; (2) investigate and report upon the efficiency of the Space Force and its preparation to support military operations by commanders of the combatant commands; (3) prepare detailed instructions for the execution of approved plans and supervise the execution of those plans and instructions; (4) as directed by the Secretary of the Air Force or the Chief Staff of the Space Force, coordinate the action of organizations of the Space Force; and (5) perform such other duties, not otherwise assigned by law, as may be prescribed by the Secretary of the Air Force. 9094. Chief of Staff of the Space Force (a) Appointment (1) There is a Chief of Staff of the Space Force, appointed by the President, by and with the advice and consent of the Senate, from the general officers of the Space Force. The Chief of Staff shall serve at the pleasure of the President. (2) The Chief of Staff shall be appointed for a term of four years. In time of war or during a national emergency declared by Congress, the Chief of Staff may be reappointed for a term of not more than four years. (3) The President may appoint an officer as Chief of Staff only if— (A) the officer has had significant experience in joint duty assignments