National Nuclear Security Administration

Ambassador Ensher visits Y-12 and NNSS

April 25, 2016

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Ambassador Henry S. Ensher, the top U.S. diplomat at the United States Mission to International Organizations in Vienna, Austria, recently visited two facilities to understand NNSA’s mission better: the Y-12 National Security Complex and the Nevada National Security Site (NNSS).

At Y-12, he got an up-close look at the nuclear operations that help provide the backbone of U.S. national security policy.  “Seeing firsthand Y-12’s infrastructure and activities in support of stockpile stewardship, I can say categorically to the public and to our foreign colleagues in Vienna that when we say our nuclear weapons stockpile is safe, secure and effective, we really mean it,” said Ensher, who assumed his post as the U.S. Chargé d’Affaires in Vienna in July 2015.

While at NNSS, Ambassador Ensher visited additional stockpile stewardship support facilities and those used for NNSA’s nonproliferation missions, including a facility once used for underground nuclear explosive testing – the “P” Tunnel complex. The United States discontinued such testing in 1992. The work NNSA’s nonproliferation programs perform at NNSS helps strengthen the nonproliferation regime, including  the work of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization and the International Atomic Energy Agency.