Narrator (voice)

Self - SETI Institute

Self - U.K. Ministry of Defense

Self - Director of Defense Studies, West Point

Self - Theoretical Physicist (archive footage)

Self - USAF Air Command and Staff College

Self - Physicist & Author

Self - Co-Author, Alien Invasion: How to Defend Earth

Self - Author, Contact with Alien Civilizations

Self

Self - Author, Live Free or Die

Self - Author: Adventures Among Ants

Self - Washington State University

Self - Author, Emergency

Self - onPoint Tactical

Self - Gunnery Sergeant, USMC

Self - High Altitude Research Corp.

Survivor

Laboratory Scientist

Survivor

Scientist

Survivor

News Correspondent

Survivor

Resistance Leader

Survival Expert

Resistance Fighter

Survivor

Survivor

Astronomer

Survivor

Resistance Fighter

Agent Patterson

Survivor

Human Resistance Leader