William Shatner

Narrator

Edward Teller

Self - Nuclear Physicist

W.H.P. Blandy

Self - Commander Joint Task Force One (archive footage)

Frank H. Shelton

Self - Nuclear Weaponeer

Dwight D. Eisenhower

Self - U.S. President (archive footage)

Adlai Stevenson

Self - U.S Ambassador (1961-1965) to the UN (archive footage)

Randall William Cook

Newsreel Narrator (archive sound)

Nikolai Bulganin

Self (archive footage)

Winston Churchill

Self (archive footage)