James Lurie
Narrator (voice)
Seth Shostak
Self - SETI Institute
Nick Pope
Self - U.K. Ministry of Defense
Brian De Toy
Self - Director of Defense Studies, West Point
Stephen Hawking
Self - Theoretical Physicist (archive footage)
Paul Springer
Self - USAF Air Command and Staff College
Travis Taylor
Self - Physicist & Author
Bob Boan
Self - Co-Author, Alien Invasion: How to Defend Earth
Michael Michaud
Self - Author, Contact with Alien Civilizations
John Ringo
Self - Author, Live Free or Die
Mark Moffett
Self - Author: Adventures Among Ants
Dirk Schulze-Makuch
Self - Washington State University
Neil Strauss
Self - Author, Emergency
Kevin Reeve
Self - onPoint Tactical
Quay Terry
Self - Gunnery Sergeant, USMC
Bill Brown
Self - High Altitude Research Corp.
Carin Chea
Laboratory Scientist
Leandro DiMonriva
Scientist
Philip Hersh
News Correspondent
Christopher Clay Jones
Resistance Leader
Matt Lasky
Survival Expert
Eric Raymond Lim
Resistance Fighter
David Schlachtenhaufen
Resistance Fighter
Christopher Warren
Agent Patterson
Justin Cuomo
Human Resistance Leader
