“ Sec. 4. Administration. (a) At the head of the Office there shall be a Director, who shall be an officer of the United States designated by the President. The Director shall exercise immediate supervision and direction over the Office.
(b) The Director may, to the extent permitted by law, including but not limited to section 621 of the FAA (22 U.S.C. 2381) , employ such staff from Federal agencies as may be necessary, except that the staff shall be limited to twelve supervisory personnel, plus appropriate support personnel. ”