Akos Ledeczi, Vanderbilt University (IMAGE) Vanderbilt University Caption Akos Ledeczi holds a kevlar helmet with the microphones and network node attached that can turn the helmet into an accurate shooter location system. Credit Steve Green, Vanderbilt University 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.