Los Alamos National Labs with logo 2021

Nuclear Threat Assessment

Global security and threat assessment applications

Contact Us  

  • Group Leader
  • Daniel B. Garcia
  • Email
  • Deputy Group Leader
  • Scott D. Ramsey
  • Email
  • Administrative Assistant
  • Carolyn M. Salazar
  • Email
Image shows NTA logo

NTA logo


Provide expertise in nuclear weapon design physics to understand, characterize, and defeat foreign weapons and improvised devices.

What we do

The Nuclear Threat Assessment Group, XTD-NTA, maintains and stewards a broad set of nuclear-weapon physics, design, and weapon output capabilities with a view towards global security and threat assessment applications.

XTD-NTA provides intellectual leadership in developing innovative and time-sensitive solutions to national security requirements, and plays a leadership role in the integration of global security and threat assessment applications throughout the X Theoretical Design (XTD) Division.