David McLean as Matt Powell

Charles Bronson as Lt. Col. Lee Brandon

Mary Tyler Moore as Pamela Stewart

Stanley Livingston as Mike Brandon

Ralph Taeger as Maj. Ernest Wilde

Brad Dexter as Maj. Anthony Rinaldi

Kenneth Tobey as Col. Craig Brewster

James Gregory as Tom Deparma

Patricia Owens as Margaret Brandon

James Stewart as Himself / Narrator (voice)

Lisabeth Hush as Diane Wilde

Lauren Gilbert as Col. Jessup

Frank Watkins as Security Policeman

Dick Wilson as Flight Engineer