Kronos

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

?

Kenneth Alton

McCrary - The Pickup Driver

Jose Gonzales-Gonzales

Manuel Ramirez

?

Robert Forrest

KGTK-TV Newscaster

?

Baxter Ward

Second Newscaster

John Halloran

Lab Central Security Guard

Marjorie Stapp

Nurse

John Parrish

Gen. Perry

?

Don Eitner

Air Force Meteorology Sergeant

?

Ron Kennedy

Air Force Control Tower Sergeant

?

Gordon Mills

Sergeant