Rock Hudson

Col. Jim Caldwell

Rod Taylor

Col. Hollis Farr

Mary Peach

Victoria Caldwell

Barry Sullivan

Col. Bill Fowler

Kevin McCarthy

Gen. 'Happy Jack' Kirby

Henry Silva

Col. Joe Garcia

Leora Dana

Mrs. Evelyn Fowler

Robert Lansing

Sgt. Banning

Richard Anderson

Col. Ralph Josten

Richard LePore

Sergeant Kemler

Robert Bray

Lt. Col. Gales

Jim Bannon

Col. Morse

Nelson Leigh

Russ Bender

John McKee

Ben Wright

Louise Fletcher

Mrs. Kemler

John Holland

Ed Prentiss

Duty Controller

R. Wayland Williams

Leif Erickson

Gen. Hewitt

Brandon De Wilde

Bill Fowler Jr (uncredited)

Steve Welles

Airman (uncredited)

Dorothy Abbott

Mary Benoit

John Davidson

Hadley - S.A.C. Observer (uncredited)

Jay Jacobus

Ray Montgomery

Capt. Line (uncredited)

Ward Ramsey

Bing Russell

Captain (uncredited)

Ted Stanhope

Marjorie Stapp

John Zaremba

Flight Surgeon (uncredited)

Ed Kemmer

Pilot (uncredited)

Brad Trumbull

Co-Pilot (uncredited)