The GOES-R GLM Sensor Unit (IMAGE) NASA/Goddard Space Flight Center Caption The GOES-R GLM Sensor Unit with thermal blankets and (non-flight) baffle installed. This is what the GLM Sensor Unit will look like when it is on the spacecraft. Credit Lockheed Martin Usage Restrictions None 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.