Edmund Belfour Bossart Jr. 28 Aug 1971-6 Apr 1973 Harold Patrick Sexton, Jr. 6 Apr 1973-30 Sep 1975 Joseph Jack D’Amato 30 Sep 1975-16 Jul 1977 Charles O. Johnson 16 Jul 1977-27 Oct 1979 Richard Benard McKenna 27 Oct 1979-14 Nov 1981 George Horace Coshow II 14 Nov 1981-22 Jan 1984 William S. Clark 22 Jan 1984-10 Aug 1986 Donald Franklin Russell 10 Aug 1986-28 Aug 1988 John T.O. Martin 28 Aug 1988-16 Mar 1990 John S. Pine 16 Mar 1990-5 Jun 1992