DISASTER DRILL National Guard Chief Army Lt. Gen. H Steven Blum addresses media and VIPs at the Muscatatuck Urban Training Center, Ind., May 12, during the “Vigilant Guard” exercise. More than 2,000 National Guard troops and hundreds of state and federal emergency response agencies worked through the disaster scenario of a 10-kiloton nuclear explosion in Indianapolis. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 278307-G-GBJ46-559.jpg Photo Gallery