Thomas Geist 25 Jul 1998	Arthur L. Bloch 05 Sep 1998	James A. Dougalas 04 Jun 2006	William M. Raymond 18 Dec 2008
James R. Tichenor 12 May 2009	Lee Allen 18 Jan 2016	Jack W. Dice 24 Aug 2017	Charles R. Neely 24 Nov 2019
Julian T. Caraballo 27 Aug 2020	John S. Gibbs 06 Sep 2020	Richard L. Cox 05 Mar 2023	William T. Veal 19 Jun 2025
Terrence L. Rich 06 Jan 2026	Robert M. Myers 22 May 2026