Firefighters unload hazardous materials equipment on board the "Cape Johnson" on the first day of the Hampton Roads Full Scale Exercise staged off the coast of Fort Eustis, Va., May 17, 2011. The three-day exercise strengthens anti-terrorism capabilities and tests local, state and federal response efforts in maritime, hostage and mass casualty scenarios. (U.S. Air Force photo by Senior Airman Zachary Wolf)(RELEASED)