Henry Fonda character The President
Walter Matthau character Prof. Groeteschele
Fritz Weaver character Col. Cascio
Larry Hagman character Buck
Frank Overton character Gen. Bogan
Edward Binns character Col. Jack Grady
Dan O'Herlihy character Brig. Gen. Warren A. Black
William Hansen character Defense Secretary Swenson
Russell Hardie character Gen. Stark
Janet Ward character Helen Grady
Dom DeLuise character TSgt. Collins
Russell Collins character Knapp
Sorrell Booke character Congressman Raskob
Nancy Berg character Ilsa Wolfe
John Connell character Thomas
Frank Simpson character Sullivan
Hildy Parks character Betty Black
Dana Elcar character Foster
Louise Larabee character Mrs. Cascio
Stewart Germain character Mr. Cascio
Geri Miller character Go-go Dancer (uncredited)
Charles Tyner character Jet Fighter Pilot (voice) (uncredited)
