André Amond

饰：Himself - Civil Engineer, Belgian Army

Albert Creutz

饰：Himself - Police Dispatcher

Wilfried de Brouwer

饰：Himself - Belgian Air Force

Bruce Englund

饰：Himself - US Air Force

Patrick Ferryn

饰：Himself - UFO Researcher

Mike Fortson

饰：Himself - Witness

Richard F. Haines

饰：Himself - Former NASA Scientist

Richard Conn Henry

饰：Himself - Professor of Physics & Astronomy, Johns Hopkins Univer

Leslie Kean

饰：Herself - Author, UFOs: Generals, Pilots and Government Official

Yves Meelbergs

饰：Himself - Former F-16 Pilot, Belgian Air Force

Monroe Nevels

饰：Himself - US Air Force

James Penniston

饰：Himself - Tech. Sergeant

Lawton Paseka

饰：Narrator,

道格拉斯·特朗布尔

Douglas Trumbull

饰：Self - Director & Photographic Effects Supervisor

Nick Pope

饰：Self - UK Ministry of Defense, 1985-2006