Earthquake Drill Two service members set up a satellite during a response to a mock earthquake as part of Exercise Sentinel Response in Eldridge, Calif., April 26, 2022. More than 650 soldiers and civilians took part in the training event. SHARE: Download: Full Size (1.04 MB) Tags: Army, Sentinel Response Credit: Army Sgt. John Stephens VIRIN: 220426-Z-XU624-942A.JPG Photo Gallery