Jennifer McQuiston (Self - Disease Detective, Centers for Disease Control and Prevention), Raj Dasgupta (Self - Pulmonary and Critical Care Physician, University of Southern California), Mark Kortepeter (Self - Vice President of Research, Uniformed Services, Univ. of the Health Sciences), Kirsten Fisher (Self - Prof., Biological Sciences, Cal State, Los Angeles), Bryan Walsh (Self - Author, End Times: A Brief Guide to the End of the World), Heather Quinlan (Self - Author, Plagues, Pandemics and Viruses), William Arkin (Self - Journalist & National Security Expert), Daniel Jernigan (Self - Director, Influenza Division, Centers for Disease Control and Prevention), John Barry (Self - Author, The Heat Influenza), Eric Pevzner (Self - Chief, Epidemic Intelligence Service, Centers for Disease Control and Prevention)