Los Alamos National Labs with logo 2021

Safety and Surety

Application of multidimensional numerical techniques for weapon safety and surety

Contact Us  

  • Deputy Group Leader
  • Devin Shunk
  • Email
  • Administrative Assistant
  • Carolyn M. Salazar
  • Email
Image shows XTD-SS logo

XTD-SS logo


  • To assess the safety and surety of nuclear weapons
  • To provide solutions to global-security and conventional-munitions challenges

What we do

XTD-SS maintains and applies multidimensional numerical techniques to assess the safety and surety of nuclear weapons and to address global-security and conventional-munitions challenges. We use validated, verified physics models and methods and the quantification of uncertainties (QMU) process to obtain accurate and timely assessments and solutions.

Our success is measured by our customers within the nuclear weapons complex and the Department of Defense and by the peer-review process.