Scott P. Squyres
First National Executive Secretary
1925-1937
Herman Ziemer
Second National Executive Secretary
1937-1939
A. Frank Martin
Third National Executive Secretary
1939-1964
Robert H. Rubin
Fourth National Executive Secretary
1964-1975
Max Mitchell
Interim National Executive Secretary
1975
Frank Evans
Fifth National Executive Secretary
1975-1976
Thomas Sirridge
Sixth National Executive Secretary
1976-1984
David E. Solomon
Seventh National Executive Director
1984-1995
Gwen Wilburn
Interim National Executive Director
Jan 1995 – Apr 1996
Lt. Col. Alan L. Bonner, USAF (ret)
Eighth National Executive Director
Apr 1996 – Nov 2013
Diana Spiva
Interim National Executive Director
Nov 2013 – Sep 2014
Steven C. Nelson
Ninth National Executive Director
Sep 2014 – Jan 2024
