Spc. Nathan Williams deploys a Sentinel radar system. U.S. Army Spc. Nathan Williams from the 263rd Army Air Missile Defense Command deploys a Sentinel radar system during Amalgam Dart 2009 near Camp Rilea, Ore., on June 14, 2009. Amalgam Dart is a field test of the Department of Defense's ability to rapidly deploy a total air-integrated defense system. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 281433-F-MTP85-947.jpg Photo Gallery