| Number | Begin | End | Name |
| 31 | January 2021 | | Aaron J. Johnson |
| 30 | January 2020 | January 2021 | Kyle I. Kaough |
| 29 | December 2018 | January 2020 | Marwan H. Madi |
| 28 | January 2018 | December 2018 | Cameron J. Lane |
| 27 | September 2016 | January 2018 | Nathan T. Carlson |
| 26 | December 2015 | June 2016 | Max Nowak |
| 25 | December 2014 | December 2015 | Blake Nelson |
| 24 | December 2014 | December 2014 | Aakash Jani |
| 23 | December 2013 | December 2014 | Anthony D. Lizama |
| 22 | December 2013 | December 2013 | Nolan Brand |
| 21 | January 2012 | December 2013 | Brian Egan |
| 20 | November 2010 | January 2012 | Michael Frizzell |
| 19 | December 2009 | November 2010 | Cody Gumz |
| 18 | December 2008 | December 2009 | Christian J. Hatten |
| 17 | January 2008 | December 2008 | Kyle Hartman |
| 16 | August 2007 | January 2008 | Rob R. Parsons Jr. |
| 15 | March 2006 | April 2007 | Jason Foster |
| 14 | October 2004 | March 2006 | Christopher O. Ray |
| 13 | February 1998 | August 1998 | Frederick Lopez |
| 12 | June 1997 | February 1998 | Gregory R. Coke |
| 11 | February 1997 | June 1997 | Alex J. Klingelberger |
| 10 | March 1996 | February 1997 | Jeremy L. Sonnenberg |
| 9 | May 1992 | September 1993 | Jason E. Steph |
| 8 | January 1986 | December 1986 | Major Bill M. Christian USMC (Ret.) |
| 7 | January 1981 | December 1981 | John N. Bobbitt |
| 6 | April 1978 | April 1980 | Brian D. Montgomery |
| 5 | January 1956 | December 1956 | Don R. Morrison |
| 1 | | | William J. Busch |
| 2 | | | Don R. Reimers |
| 3 | | | Wayne E. Etter |
| 4 | | | Jeffrey L. Price |