Getting ready (IMAGE) DOE/Sandia National Laboratories Caption Dari Dexheimer, Sandia National Laboratories' tethered-balloon expert, and her team prepare the 22-foot-wide, tethered, helium balloons for launch on a gorgeous fall morning. Credit Photo by Randy Montoya/Sandia National Laboratories Usage Restrictions With credit 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.