Barton C. Hacker, Ph.D. (University of Chicago, 1968), is senior curator of armed forces history in the Smithsonian Institution's National Museum of American History. He is also the founding editor of Vulcan- The International Journal of the Social History of Military Technology. He has lectured widely and published on the histories and historiographies of military technology, non-Western military institutions, women and armies, nuclear weapons testing, and manned spaceflight. In 2003 he received the Leonardo da Vinci Medal of the Society for the History of Technology.