Bertram Barre

饰：Nuclear Physicist

Ellen Bradbury

饰：Self - Resident of Los Alamos

Jayantha Dhanapala

饰：Self - President, Pugwash

Hugh Guterson

饰：Self - Author, Nuclear Rites

Sigfried Hecker

饰：Self - Director, Los Alamos National Laboratory

Joseph Masco

饰：Self - Author, Nuclear Borderlands

Paul Shambroom

饰：Self - Photographer and Author 'Facing the Bomb'

Mohammed el Baradei

饰：Former Head of IAEA

Shuntaro Hida

饰：Himself - Author, under the Mushroom-Shaped Cloud in Hiroshima

Robert McNamara

饰：Himself - US Secretary of Defense 1961-1968

Richard Rhodes

Richard Rhodes

饰：Himself - Author, Twilight of the Bombs