Characters played by Peter Graves
Dr. Ed Wainwright
Characters played by Peggie Castle
Audrey Aimes
Characters played by Morris Ankrum
Gen. John Hanson
Characters played by Than Wyenn
Frank Johnson
Characters played by Thomas Browne Henry
Col. Tom Sturgeon
Characters played by Richard Benedict
Cpl. Mathias
Characters played by James Seay
Capt. James Barton
Characters played by John Close
Maj. Everett
Characters played by Don C. Harvey
Illinois Highway Patrolman
Characters played by Larry J. Blake
Illinois Highway Patrolman
Characters played by Eilene Janssen
Teenage Girl in Car
Characters played by Hylton Socher
Frank - Soldier
Characters played by Frank Wilcox
Gen. John T. Short
Characters played by Douglas Evans
Norman Taggart - News Editor
Characters played by Paul Grant
Teenage Boy in Car
Characters played by Richard Emory
Lieutenant
Characters played by Hank Patterson
Dave
Characters played by Steve Warren
Soldier at Observation Post #3
Characters played by Frank Connor
Soldier at Observation Post #1
Characters played by Don Eitner
Soldier at Observation Post #2
Characters played by Rayford Barnes
Chuck - National Guard Corporal
Characters played by Kirk Alyn
B-52 Pilot
Characters played by Bill Baldwin
TV Announcer
Characters played by Frank Chase
Helicopter Pilot
Characters played by Joe Cranston
Soldier
Characters played by Patricia Dean
Red Cross Representative
Characters played by James Douglas
Army Sentry
Characters played by Paul Frees
Helicopter Pilot
Airplane Pilot
Characters played by Lyle Latell
Police Lt. MacKenzie
Characters played by Dennis Moore
Police Dispatcher
Characters played by Zon Murray
National Guard Sergeant
Characters played by Alan Reynolds
Insecticide Man
Characters played by Ralph Sanford
Extra beside Red Cross Representative
Characters played by Bert Stevens
Col. Hill
Characters played by Alan Wells
Headquarters Sergeant