- Bertram Barre
- Nuclear Physicist
- Ellen Bradbury
- Self - Resident of Los Alamos
- Jayantha Dhanapala
- Self - President, Pugwash
- Sergio Duarte
- Self - UN High Representative for Disarmament
- Mohamed el Baradei
- Former Head of IAEA
- Hugh Guterson
- Self - Author, Nuclear Rites
- Sigfried Hecker
- Self - Director, Los Alamos National Laboratory
- Shuntaro Hida
- Self - Author, under the Mushroom-Shaped Cloud in Hiroshima
- Rebecca Johnson
- Self - Executive Director, Acronym Institute
- Joseph Masco
- Self - Author, Nuclear Borderlands
- Robert McNamara
- Self - US Secretary of Defense 1961-1968
- Richard Rhodes
- Self - Author, Twilight of the Bombs
- Paul Shambroom
- Self - Photographer and Author 'Facing the Bomb'
