When Aliens Attack

James Lurie

Narrator (voice)

Seth Shostak

Self - SETI Institute

Nick Pope

Self - U.K. Ministry of Defense

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Brian De Toy

Self - Director of Defense Studies, West Point

Stephen Hawking

Self - Theoretical Physicist (archive footage)

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Paul Springer

Self - USAF Air Command and Staff College

?

Travis Taylor

Self - Physicist & Author

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Bob Boan

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

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Michael Michaud

Self - Author, Contact with Alien Civilizations

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Paul Parsons

Self

?

John Ringo

Self - Author, Live Free or Die

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Mark Moffett

Self - Author: Adventures Among Ants

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Dirk Schulze-Makuch

Self - Washington State University

Neil Strauss

Self - Author, Emergency

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Kevin Reeve

Self - onPoint Tactical