Threat Defense (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboratories has begun multiyear missions to strengthen U.S. electrical utilities and to defend U.S. nuclear weapon systems from evolving technological threats Credit Randy Montoya, Sandia National Laboratories Usage Restrictions media License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.