Pauline Silvia, the filmmaker's mother, was one of the few women scientists doing research on the effects of radiation from the atom bomb during the early 1950’s. She joined the navy as a biologist when she was 22 years old. She was assigned to the Naval Radiological Defense Laboratory in San Francisco where she was sent to the Nevada Test Site and exposed to five of the eleven atomic detonations during “Operation Upshot-Knothole”.

Emiko Okada was 8 years old when the atom bomb was dropped on Hiroshima on August 6, 1945. Her twelve year-old sister was never found. Most of her family, including her mother died in the following months. She has a daughter, who is also interviewed. Ms. Okada is actively campaigning for the abolition of all nuclear weapons.

Mary Palevsky is the Director of the Nevada Test Site Oral History Project sponsored by the University of Nevada Las Vegas. She is the author of Atomic Fragments: A Daughter’s Questions, which is a collection of interviews of scientists who worked with both of her parents on the Manhattan Project.

Sr. Rosemary Lynch is a 90 year-old Franciscan nun who has been protesting outside of the Nevada Test Site since the early 1970’s. She is a co-founder of the international organization Pace e Bene, which promotes non-violent living and spirituality.

Ray Harbert is an engineer who worked at Los Alamos and the Nevada Test Site, and helped to build the missile system that was a threat during the Cuban Missile Crisis. He evacuated the inhabitants of the island of Ronjelab in the Bikini islands after the atomic bomb test called Baker, which was much stronger and destructive than anticipated.

Dr. Shuntaro Hida was a 28 year-old Japanese Military doctor who survived the bombing after being called to a nearby village in the middle of the night to treat a young girl. He was one of the first doctors to respond and treated over 300 survivors a day with no medical supplies or knowledge of radiation illness. He has dedicated his life to treating survivors, the Hibakusha, and calling for the abolition of nuclear weapons.

Martin Sheen is an actor and social activist. He has been arrested 66 times during various political demonstrations, many for anti-nuclear campaigns. He has been protesting outside of the Nevada Test Site for many years and starred as the President of the United States on the popular television series West Wing.

Dr. Helen Caldicott is a Nobel Peace Prize nominee and founder of Physicians for Social Responsibility and the Nuclear Policy Research Institute. She is the author of several books including Missile Envy, Metal of Dishonor, If You Love This Planet, Nuclear Madness, The New Nuclear Danger, and Nuclear Power is Not the Answer.