arcs and sparks: Z firing (IMAGE) DOE/Sandia National Laboratories Caption An open-shutter photo showing electrical energy coursing through the transmission line sections of Sandia National Laboratories’ Z machine Credit Randy Montoya, Sandia National Laboratories Usage Restrictions news media License Original 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.