Brad Conrad
American Institute of Physics, College Park, MD, USA
Will Slaton
University of Central Arkansas, Conway, AR, USA
Dwight Neuenschwander (Southern Nazarene University, Bethany, OK, USA)
Gary White (George Washington University, Washington, DC, USA)
2012-2016: Toni Sauncy
2008–2012: Gary White
2002–2008: Dwight Neuenschwander
1979–2002: Rexford Adelberger