Yohuru Williams (Self - Professor: University of St. Thomas), Martin K.A. Morgan (Self - Military Historian), Paul Sutter (Self - Physicist, Author), Amy Shira Teitel (Self - Journalist, Science Writer), Austin Rogers (Self - Jeopardy! All Star), Edward T. O'Donnell (Self - Historian: College of the Holy Cross), Sami Jarroush (Self - Historian), Matthew Steiner (Self - Crime Scene Detective), Daniel Dickrell (Self - Mechanical Engineer), Joseph Dituri (Self - Biomedical Engineer)