cast
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James Lurie
Narrator (voice)
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Seth Shostak
Self - SETI Institute
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Nick Pope
Self - U.K. Ministry of Defense
- Brian De Toy Self - Director of Defense Studies, West Point
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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
- Paul Parsons Self
- John Ringo Self - Author, Live Free or Die
- Mark Moffett Self - Author: Adventures Among Ants
- Dirk Schulze-Makuch Self - Washington State University
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Neil Strauss
Self - Author, Emergency
- Kevin Reeve Self - onPoint Tactical
- Quay Terry Self - Gunnery Sergeant, USMC
- Bill Brown Self - High Altitude Research Corp.
- Elise Cantu Survivor
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Carin Chea
Laboratory Scientist
- Zee Cruise Survivor
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Leandro DiMonriva
Scientist
- Kenneth Favell Survivor
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Philip Hersh
News Correspondent
- Sydney Jay Survivor
- Christopher Clay Jones Resistance Leader
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Matt Lasky
Survival Expert
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Eric Raymond Lim
Resistance Fighter
- Desiree Martin Survivor
- Tiffany Martinez Survivor
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Richard Miraan
Astronomer
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Jose Rosete
Survivor
- David Schlachtenhaufen Resistance Fighter
- Christopher Warren Agent Patterson
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Avihai Yaffe
Survivor
- Justin Cuomo Human Resistance Leader