National Nuclear Security Administration (NNSA) - Nevada Site Office


FLC Region

Security Lab



P.O. Box 98521
Las Vegas, NV 89192-8521
United States

Laboratory Representative



Located in a remote, highly secure area of southern Nevada, the Nevada National Security Site (NNSS) is a premier outdoor, indoor, and underground national laboratory. Larger than the state of Rhode Island, the 1,360-square-mile Site is located 65 miles northwest of Las Vegas. It is a preferred location for experiments supporting the National Nuclear Security Administration (NNSA)’s nuclear weapons Stockpile Stewardship Programs, national defense programs, and national security research, development and training programs, as well as vital programs of other federal agencies. The contractor-operated site is overseen by the NNSA’s Nevada Field Office.

Mission Support and Test Services, LLC (MSTS) serves as the Management and Operating contractor of the NNSS. MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear, Inc. The company is dedicated to bringing a service and support approach to the mission of the NNSA. With some 2,400 employees, MSTS manages operations at the NNSS and at its related facilities and laboratories for the NNSA’s Nevada Field Office. The company has satellite offices in Los Alamos and Albuquerque, New Mexico; Santa Barbara and Livermore, California; Long Island, New York; and Washington, D.C., along with a small number of employees located in nine other states. 

MSTS hires in a variety of career fields, including positions in engineering, science, technical support, project management, human resources, finance, procurement and administration.




The Nevada National Security Site and its related facilities help ensure the security of the United States and its allies by: supporting the stewardship of the nation’s nuclear deterrent; providing nuclear and radiological emergency response capabilities and training; contributing to key nonproliferation and arms control initiatives; executing national-level experiments in support of the National Laboratories; working with national security customers and other federal agencies on important national security activities; and providing long-term environmental stewardship of the NNSS’s Cold War legacy.  The scientists, engineers, mathematicians, and technicians at the NNSS and its satellite locations partner with colleagues from across the National Security Enterprise, including the national laboratories and the defense and intelligence communities, to execute a multitude of high-level experimental, research, and training activities in support of national security.


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Stockpile Science
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Nevada Field Office

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This program awards grants totaling $50 million to two university consortia as part of a nonproliferation research and development effort. The grants will support each consortium with $5 million per year for five years.

The consortia link basic research at universities with the capabilities of the U.S. National Laboratories to advance nuclear science and security goals.

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Far West
Lab Representatives

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