James Whitmore
Sgt. Ben Peterson
James Arness
FBI Agent Robert Graham
Joan Weldon
Dr. Pat Medford
Edmund Gwenn
Dr. Harold Medford
Onslow Stevens
Brig. Gen. Robert O'Brien
Sandy Descher
The Ellinson Girl
Chris Drake
Trooper Ed Blackburn
Don Shelton
Trooper Capt. Fred Edwards
Mary Alan Hokanson
Mrs. Lodge
William Schallert
Ambulance Attendant
Ann Doran
Child Psychiatrist
Dub Taylor
Railroad Yard Watchman
Leonard Nimoy
Army Sergeant
Richard Deacon
Bald Reporter at L.A. News Conference
Forbes Murray
Government Official
Willis Bouchey
Official at D.C. Meeting
Mary Lou Holloway
Blonde at Police Station
Dick York
Teenager in Police Station
