Lucrezia Conklin

饰：Self - Narrator,

Lucien Clerebaut

饰：Self - Secretary General, S.O.B.E.P.S., Brussels, Belgium,(as L. Clerebaut)

Joey Condon

饰：Self - Comparative Religions Scholar, San Francisco, California,(as Rev. Joey Condon M. Div.)

Philip Corso

Roscoe Hillenkoetter

饰：Self - U.S. Navy,(as Adm. Roscoe Hillenkoetter) (credit only)

William Blanchard

饰：Himself - Base Commander, R.A.A.F.

Craig Breedlove

饰：Himself - Former Land Speed Record Holder

Harold Brown

饰：Himself - Former Secretary of Defense

罗伯特·卡拉丁

Robert Carradine

饰：Himself - Actor, Director

Edgar D. Mitchell

饰：Self - Apollo 14 Astronaut, (as Edgar Mitchell)

奥逊·威尔斯

Orson Welles

饰：Self, (archive footage) (as Orson Wells)

Jesse Marcel Jr.

饰：Self - Helena, Montana,(as Dr. Jesse Marcel Jr.)

Ted Peters

饰：Self - Center for Theology and Natural Sciences, Berkeley, California

Wendelle Stevens

Wendelle Stevens

饰：Self - U.S. Air Force,(as Lt. Col. Wendele Stevens)

Stanton Friedman

饰：Self - Nuclear Physicist, UFO Researcher

Walter Haut

饰：Self - Public Information Officer, R.A.A.F.,(as Lt. Walter Haut) (credit only)

J. Allen Hynek

饰：Self - Scientific Advisor to Blue Book,(archive footage) (as Dr. J. Allen Hynek)

Jesse Marcel

饰：Self - Former Intelligence Officer U.S. Army, Retired,(archive footage) (as Maj. Jesse Marcel)

William J. Perry

饰：Self - Former Secretary of Defense,(archive footage) (as William Perry)

Hoyt Vandenberg

饰：Self - U.S. Air Force,(as Gen. Hoyt Vandenberg) (credit only)