Lightning Imaging Sensor (3 of 3) (IMAGE) NASA/Johnson Space Center Caption Discussing the Lightning Imaging Sensor engineering test unit are, from left, Bill Lopez and Jim McLeroy from the Department of Defense Space Test Program; John Davis from Marshall; Nathan Harnagel from the Department of Defense Space Test Program; and Mike Stewart from the University of Alabama in Huntsville. Credit NASA Usage Restrictions NASA 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.