'SENTRY' GEAR Soldiers prepare for a site survey during Ardent Sentry 2013 on Savannah River Site, S.C., May 20, 2013. The training exercise involves disaster response and coordination. More than 1,500 members of the South Carolina National Guard participated in a simulated hurricane strike along the state's coast. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 546664-A-KRR30-119.jpg Photo Gallery