David Merker, second from left, Senior Executive Service Director of the U.S. National Data Center, participates in a panel discussion Nov. 30, 2016 with other nuclear treaty experts to explain the USNDC's involvement and commitment to treaty monitoring. The panel was part of the National Nuclear Security Administration's "Nuclear Explosion Monitoring: 60 Years of Science and Innovation" conference on Capitol Hill. Pictured from left to right: Madelyn Creedon, Principal Deputy Administrator for the National Nuclear Security Administration; Al-Sharif Nasser bin Nasser, a member of the Middle East Scientific Institute for Security in Jordan; Dr. Randy Bell, Director of the International Data Center; and Dr. Steve Ashby, Director of Pacific Northwest National Laboratory. (Photo courtesy of the National Nuclear Security Administration)
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