WORST-CASE SCENARIO A U.S. Air Force airman serving as a firefighter checks his equipment in a haze of smoke from a simulated building fire during a readiness exercise on Royal Air Force Mildenhall, England, July 23, 2009. The exercise prepares airmen to do their jobs in a deployed environment and worst-case scenario. The firefighter is assigned to the 100th Civil Engineer Squadron. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 460348-Q-RCH19-585.jpg Photo Gallery