Jeff Morrow
Dr. Leslie Gaskell
Barbara Lawrence
Vera Hunter
George O'Hanlon
Dr. Arnold Culver
John Emery
Dr. Hubbell Eliot
Morris Ankrum
Dr. Albert Stern
Jose Gonzales-Gonzales
Manuel Ramirez
John Halloran
Lab Central Security Guard
John Parrish
Gen. Perry
Robert Shayne
Air Force General
Richard Harrison
Pilot
Kenneth Alton
McCrary - The Pickup Driver
Robert Forrest
KGTK-TV Newscaster
Baxter Ward
Second Newscaster
Marjorie Stapp
Nurse
Don Eitner
Air Force Meteorology Sergeant
Ron Kennedy
Air Force Control Tower Sergeant
Gordon Mills
Sergeant
Rosa Turich
Manuel's Wife