Anthony D. Baker 05 Feb 1988	Michael J. Mooney 13 Oct 1988	John F. Hargrove 15 May 1993	John F. Shelby 27 Nov 1994
Claud L. Clark 05 Mar 2007	Richard J. Campbell 28 April 2012	Eugene A. Howell 14 Nov 2014	Richard T. Willson 14 May 2019
Thomas E. Noel II 14 Aug 2021	Theodore R. Dunn 01 Sep 2021	Victor T. Letonoff 17 Apr 2022	Phillip L. Blake 30 Jul 2022
Darryle L. Kouns 03 Mar 2023	Alfred K. Richeson 20 Apr 2023	Stillman D. Covell 15 Nov 2024	Frederick U. Schroeder 07 May 2026