PE1-A Team (IMAGE) Seismological Society of America Caption The Physics Experiment 1-A field team outside the entrance to P-tunnel at Nevada National Security Site. Credit Lawrence Livermore National Laboratory Usage Restrictions None 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.