Obsada:

• William Hopper Col. Robert Calder
• Joan Taylor Marisa Leonardo
• Frank Puglia Dr. Leonardo
• John Zaremba Dr. Judson Uhl
• Thomas Browne Henry Maj. Gen. A.D. McIntosh
• Tito Vuolo Police Commissioner Charra
• Jan Arvan Contino
• Arthur Space Dr. Sharman
• Bart Braverman Pepe
• Sid Cassel Farmer
• Ray Harryhausen Man feeding elephant
• George Khoury Verrico
• Rollin Moriyama Farmer
• Don Orlando Mondello
• George Pelling Maples
• Barry Russo Staff Officer in Pentagon