U.S. airmen spot an unexploded ordnance after a simulated chemical attack during an operational readiness exercise on Royal Air Force Base Mildenhall, England, Sept. 11, 2012. The airmen are assinged to the 100th Security Forces Squadron. U.S. airmen spot an unexploded ordnance after a simulated chemical attack during an operational readiness exercise on Royal Air Force Base Mildenhall, England, Sept. 11, 2012. The airmen are assinged to the 100th Security Forces Squadron. SHARE: Download: Full Size (1.84 MB) Tags: photo essays Credit: VIRIN: 591740-I-BZL60-107.jpg Photo Gallery