Driver's Ed. (image) DOE/Sandia National Laboratories Caption Driving the Mobile Radiation Detection and Identification System (MRDIS) is no piece of cake; the driver is sideways, 15 feet up, and each front wheel operates independently. Credit Photo by Greg Stihel Usage Restrictions None 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.