边思恩
Sue Ann Pien
饰：自己
罗伯特·克洛特沃西
Robert Clotworthy
饰：Self - Narrator
Nick Pope
饰：Self - British Ministry of Defence, 1985 - 2006
Seth Shostak
饰：Self - Senior Astronomer, SETI Institute
John Podesta
饰：Self - White House Chief of Staff 1998 - 2001
Richard Dolan
Richard Dolan
饰：Self - Author, UFOs and the National Security State
David Childress
饰：Self - Author, Technology of the Gods
乔治欧·A·索卡洛斯
Giorgio A. Tsoukalos
饰：Self - Publisher, Legendary Times Magazine
Robert M. Wood
饰：(as Robert M Wood PhD)
尼尔·阿姆斯特朗
Neil Armstrong
饰：(archive footage)
比尔·克林顿
Bill Clinton
饰：(archive footage)
Gordon Cooper
饰：(archive footage)
德怀特·戴维·艾森豪威尔
Dwight D. Eisenhower
饰：(archive footage)
尤里·加加林
Yuri Gagarin
饰：(archive footage)
H.R. Haldeman
H.R. Haldeman
饰：(archive footage)
Roscoe Hillenkoetter
饰：(archive footage)
Daniel Inouye
饰：(archive footage)
Donald E. Keyhoe
饰：(archive footage) (as Major Donald Keyhoe)
布吉斯·梅迪斯
Burgess Meredith
饰：(archive footage)
理查德·米尔豪斯·尼克松
Richard Milhous Nixon
饰：(archive footage)
Harry Reid
饰：(archive footage)
Laurance S. Rockefeller
饰：(archive footage)
Robert Salas
饰：(archive footage)
Ted Stevens
饰：(archive footage)
Nathan Twining
饰：(archive footage) (as General Nathan Twining)
Stephen Bassett
Stephen Bassett
饰：Self - Executive Director, Paradigm Research Group
George Noory
饰：Self - Radio Host, Coast to Coast AM
Travis S. Taylor
饰：(as Travis Taylor PhD)
Mike Bara
Mike Bara
饰：Self - Author, Hidden Agenda
Linda Moulton Howe
Linda Moulton Howe
饰：Self - Investigative Journalist, Earthfiles
Chase Kloeztke
饰：(as Chase Kloetze)
T.D. Barnes
饰：Self - Former Area 51 Special Projects Engineer
巴兹·奥尔德林
Buzz Aldrin
饰：Self - NASA Astronaut, Apollo 11
Kenneth Arnold
饰：(archive footage)
希拉里·罗德姆·克林顿
Hillary Rodham Clinton
饰：(archive footage)
托马斯·德朗格
Thomas DeLonge
饰：(archive footage) (as Thomas DeLonge)
Ronald Evans
饰：(archive footage)
何塞·费勒
José Ferrer
饰：(archive footage)
约翰·格里恩
John Glenn
饰：(archive footage)
Paul Hellyer
Paul Hellyer
饰：(archive footage) (as Hon Paul Hellyer)
J. Allen Hynek
饰：(archive footage)
约翰·肯尼迪
John F. Kennedy
饰：(archive footage)
Edgar D. Mitchell
饰：(archive footage)
罗纳德·威尔逊·里根
Ronald Wilson Reagan
饰：(archive footage)
Edward J. Ruppelt
饰：(archive footage) (as Captain Edward Ruppelt)
罗德·瑟林
Rod Serling
饰：(archive footage)
哈里·S·杜鲁门
Harry S. Truman
饰：(archive footage)