Jongmin Lee (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboratories atomic physicist Jongmin Lee examines the sensor head of a cold-atom interferometer that could help vehicles stay on course where GPS is unavailable. Credit Bret Latter, Sandia National Laboratories Usage Restrictions For use by media for news reporting purposes. All other uses must receive express permission from Sandia National Laboratories. 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.