Failsafe Technologies – The MC2912 is the Arming, Fusing, and Firing System (AF&F) designed by Sandia and employed on the W76/Mk4 nuclear warhead. The AF&F's safety features ensure the weapon does not detonate in accidental or other unintended scenarios.

Sandia's primary mission is ensuring the U.S. nuclear arsenal is safe, secure, reliable, and can fully support our Nation's deterrence policy. We employ only the most advanced and failsafe technologies to fulfill our responsibilities as stewards of the nuclear stockpile.

World-class scientists and engineers are drawn to Sandia by opportunities to conduct breakthrough research. Sandia designs and integrates over 6,300 parts of a modern nuclear weapon's 6,500 components. And our state-of-the-art laboratories facilitate large-scale testing and computational simulation, supporting our efforts to:

• Enhance weapon and surveillance technology
• Create new technologies to safeguard our nuclear production complex
• Evaluate the nuclear arsenal for safety, security, and reliability
• Develop new defense options
• Update weapons systems to maintain their capabilities

• Enhance the capabilities of radiation-hardened microelectronics to address national security issues
• Develop simulation capabilities to model the entire nuclear weapon lifecycle
• Deliver advanced robotics systems to monitor proliferation activities, clean up hazardous sites, and disassemble old munitions
• Improve the methods and practices used to support product delivery
• Incorporate pulsed power technology into defense applications
• Develop Distributed Information Systems for the nuclear weapons complex