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National Museum of Nuclear Science & History

J. Samuel (“Sam”) Walker is the former historian of the U.S. Nuclear Regulatory Commission and the author of Prompt and Utter Destruction: Truman and the Use of Atomic Bombs against Japan. He is also the author of five books on the history of regulating nuclear power, including Three Mile Island: A Nuclear Crisis in Historical Perspective and The Road to Yucca Mountain: The Development of Radioactive Waste Policy in the United States.

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Kennette Benedict

Chicago, IL

Kennette Benedict is an American political scientist. She is currently a senior advisor to the Bulletin of the Atomic Scientists and is a lecturer at the University of Chicago.

Geoffrey F. Chew

Los Alamos, NM

Geoffrey Chew was an American physicist. Born and raised in Washington, DC, Chew graduated from high school at the age of 16.

Curtiss Brennan

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Curtiss Brennan is an American archaeologist who received his PhD in 1978. In the 1970s, he and his wife, Mary, moved next door to Dorothy McKibbin, striking up a friendship with her and eventually becoming the owners of her home when she passed away.

Mary Brennan

Santa Fe, NM

Mary Brennan lives in Santa Fe, New Mexico. She and her husband, Curtiss, moved next door to Dorothy McKibbin, the “Gatekeeper to Los Alamos.