Roma Agrawal (Self - Structural Engineer), Rob Bell (Self - Engineer & Adventurer), Peter Bily (Self - Civil Engineer), Saul David (Self - Military Historian & Author), Dan Davis (Self - San Diego Transport Engineer), Andrew Gough (Self - Historian & Author), Diana Hyatt (Self - President, Pacific Southwest Railway Museumelf - Historian & Author), Lisa Kane (Self - Road Engineering Sociologist)